Mill No. 20 and the Industrial Development of the Pepperell Mill Complex in Biddeford, Maine

The Pepperell Mill complex in Biddeford, Maine, represents one of the most significant surviving examples of nineteenth- and early twentieth-century textile manufacturing in New England. Among its many industrial structures, Mill No. 20—constructed in 1911—illustrates the technological, architectural, and organizational transformation of the American textile industry during its mature phase. Built during a period of modernization and expansion, Mill No. 20 reflects the shift from early water-powered industrial systems to electrically driven, large-scale factory production integrated within a complex multi-building manufacturing district.

The development of Mill No. 20 occurred within the broader industrial evolution of the Pepperell Manufacturing Company, which had been established in 1844 to exploit the waterpower potential of the Saco River.1 Early industrial development in Biddeford relied heavily on the river’s falls, which provided mechanical energy to drive textile machinery through a system of canals, turbines, and shaft-driven transmission.2 By the late nineteenth century, however, advances in steam power and electrical generation began to reduce dependence on direct waterpower, enabling factories to expand beyond the constraints of hydraulic systems.

Mill No. 20 was constructed during a period of significant corporate consolidation and modernization within the Pepperell system. At this time, the company was expanding its production capacity in response to national demand for cotton textiles and increasing competition within the American industrial economy.3 The new building was designed to accommodate high-density textile operations, particularly weaving, which required large open interior spaces capable of housing rows of mechanized looms. Unlike earlier mill structures, which were more segmented and closely tied to water distribution systems, Mill No. 20 reflected a more flexible industrial design emphasizing efficiency and scalability.

The architectural design of Mill No. 20 followed the industrial trends of the early twentieth century, incorporating fire-resistant brick construction, large multi-pane windows, and reinforced interior framing.4 These features improved both safety and working conditions by increasing natural light and reducing fire risk—an especially important concern in textile mills where cotton dust created highly combustible environments. The sawtooth and large-window design elements common in this period also reflected growing attention to worker productivity and machine visibility.

In terms of function, Mill No. 20 was primarily used for weaving operations, one of the final and most critical stages in textile production.5 Cotton fiber processed in earlier stages of the mill system—spinning and carding—was transformed into finished cloth through mechanized looms arranged in dense production rows. The introduction of electric power allowed individual machines to operate more independently, reducing reliance on centralized belt-and-shaft systems and increasing operational flexibility.6 This technological shift marked a major transition in industrial organization, as production became more modular and less dependent on rigid mechanical infrastructure.

Mill No. 20 also reflects broader changes in labor organization within the Pepperell complex. By the early twentieth century, textile production in Biddeford relied heavily on a diversified immigrant workforce, including Irish, French Canadian, and other European laborers.7 Workers in weaving departments typically endured long shifts in noisy, high-intensity environments characterized by repetitive machine operation and continuous production schedules. Although mechanization increased output, it also reinforced demanding labor conditions that were common across the New England textile industry.

The construction of Mill No. 20 coincided with the peak of Biddeford’s industrial capacity. At its height, the Pepperell system employed thousands of workers and operated as part of a larger regional network of mills along the Saco River.8 However, even as the complex expanded physically, structural pressures within the American textile industry were already beginning to emerge. Southern industrial centers, benefiting from lower labor costs and newer facilities, increasingly challenged the competitiveness of New England mills.9 Over time, these economic shifts contributed to the gradual decline of textile production in Biddeford.

Mill No. 20 therefore represents both the apex and the beginning of the end of industrial textile dominance in the region. While it reflects advanced engineering and industrial efficiency for its time, it also belongs to a system that would soon face irreversible decline. By the mid-to-late twentieth century, much of the textile industry had relocated to other regions and countries, leaving behind large industrial complexes like Pepperell as remnants of a once-dominant economic system.

Today, Mill No. 20 remains part of the preserved Pepperell Mill Campus, repurposed for modern commercial, residential, and creative uses. Its continued existence provides a physical link to Biddeford’s industrial past and illustrates the adaptive reuse of historic manufacturing infrastructure in post-industrial New England.

Footnotes

1. Bryant F. Tolles Jr., The Textile Mill in Early New England (Hanover, NH: University Press of New England, 1973), 44–48.

2. Maine Historic Preservation Commission, Biddeford-Saco Mills Historic District National Register Nomination Form (Augusta: Maine Historic Preservation Commission, 1978), 11–14.

3. Pepperell Manufacturing Company, The Romance of Pepperell: A Brief Account of How a Great Industry Developed at Biddeford (Biddeford, ME: Pepperell Manufacturing Company, 1921), 15–18.

4. Ibid., 19–21.

5. David A. Hounshell, From the American System to Mass Production, 1800–1932 (Baltimore: Johns Hopkins University Press, 1984), 67–74.

6. Louis C. Hunter, A History of Industrial Power in the United States, 1780–1930, vol. 1, Waterpower in the Century of the Steam Engine (Charlottesville: University Press of Virginia, 1979), 241–247.

7. Yves Roby, The Franco-Americans of New England: Dreams and Realities (Montreal: McGill-Queen’s University Press, 2004), 52–59.

8. Maine Historic Preservation Commission, Biddeford-Saco Mills Historic District National Register Nomination Form, 18–20.

9. Gavin Wright, Old South, New South: Revolutions in the Southern Economy since the Civil War (New York: Basic Books, 1986), 143–150.

Bibliography

Hounshell, David A. From the American System to Mass Production, 1800–1932. Baltimore: Johns Hopkins University Press, 1984.

Hunter, Louis C. A History of Industrial Power in the United States, 1780–1930. Vol. 1, Waterpower in the Century of the Steam Engine. Charlottesville: University Press of Virginia, 1979.

Maine Historic Preservation Commission. Biddeford-Saco Mills Historic District National Register Nomination Form. Augusta: Maine Historic Preservation Commission, 1978.

Pepperell Manufacturing Company. The Romance of Pepperell: A Brief Account of How a Great Industry Developed at Biddeford. Biddeford, ME: Pepperell Manufacturing Company, 1921.

Roby, Yves. The Franco-Americans of New England: Dreams and Realities. Montreal: McGill-Queen’s University Press, 2004.

Tolles, Bryant F., Jr. The Textile Mill in Early New England. Hanover, NH: University Press of New England, 1973.

Wright, Gavin. Old South, New South: Revolutions in the Southern Economy since the Civil War. New York: Basic Books, 1986.

The History of the Pepperell Mill in Biddeford, Maine

The history of the Pepperell Mill complex in Biddeford, Maine, illustrates the rise and decline of industrial textile manufacturing in New England during the nineteenth and twentieth centuries. Constructed along the falls of the Saco River, the mills transformed Biddeford from a small river settlement into one of the region’s leading manufacturing centers. For more than 150 years, the Pepperell mills shaped the city’s economy, labor force, immigration patterns, and urban development. Their growth reflected the broader expansion of American industrial capitalism, while their eventual decline mirrored the collapse of New England’s textile industry in the twentieth century.

Industrial development in Biddeford began with the recognition that the Saco River possessed immense waterpower potential. During the early nineteenth century, investors sought to replicate the successful textile manufacturing systems already established in Lowell and Lawrence, Massachusetts. In 1837, local industrialists and Boston investors organized the Saco Water Power Company to develop the river’s falls for large-scale manufacturing.^1 Among the most influential figures was Samuel Batchelder, a prominent textile manufacturer and engineer associated with the early Lowell mills. Batchelder and his associates recognized that the forty-foot drop of the Saco River could support a major textile enterprise.^2

The Pepperell Manufacturing Company was formally incorporated in 1844 as part of this larger industrial initiative.^3 Initial investors included Boston merchants, industrial financiers, and textile entrepreneurs connected to New England’s expanding cotton industry. The company’s leadership drew heavily from established textile manufacturing networks centered in Massachusetts. Their objective was to create a vertically integrated industrial complex capable of spinning, weaving, bleaching, dyeing, and finishing cotton textiles within a single manufacturing district.^4

Construction of the mills required extensive engineering work. Irish immigrant laborers excavated canals and foundations by hand, while skilled stone masons constructed underground granite tunnels and water channels beneath the factory buildings.^5 The waterpower system became one of the defining technological features of the Pepperell mills. Engineers designed a series of canals, turbine chambers, and underground lagoons that directed water from the Saco River through the industrial complex. Water entered upper canals, flowed through turbines beneath the mills, and exited through lower channels back toward the river.^6

The earliest mills relied entirely upon waterpower transmitted mechanically through shafts, gears, and leather belt systems. Massive waterwheels and later iron turbines converted hydraulic energy into rotational motion that powered spinning frames and weaving machinery throughout the buildings.^7 During the late nineteenth century, steam engines supplemented waterpower, particularly during periods of fluctuating river flow. Eventually, electrical systems replaced direct mechanical transmission, allowing machinery to operate more efficiently and independently within the factory complex.^8

The machinery used at Pepperell reflected major technological developments in textile manufacturing during the Industrial Revolution. Early production centered on spinning mules, carding machines, and power looms adapted from English industrial designs.^9 Raw cotton imported primarily from the American South arrived by rail and ship before entering the production process. Workers first cleaned and carded the cotton fibers to align them into continuous strands. These strands were then spun into yarn using mechanized spinning frames before being transferred to weaving rooms containing hundreds of looms.^10

The mills produced a variety of cotton goods, including sheeting, blankets, towels, thread, and woven fabrics. Production methods became increasingly specialized during the late nineteenth and early twentieth centuries. Large weave rooms operated continuously with rows of mechanized looms powered by overhead shaft systems.^11 After weaving, fabrics underwent bleaching, dyeing, washing, and finishing processes that prepared them for commercial sale. Chemical treatments and industrial finishing techniques improved texture, whiteness, and durability. By the early twentieth century, the company also manufactured synthetic and blended fabrics in response to changing consumer demand and technological innovation.^12

The rapid expansion of the Pepperell mills transformed Biddeford into an industrial city. During the second half of the nineteenth century, thousands of workers migrated to the area seeking employment. Irish immigrants formed one of the earliest labor groups, followed by large numbers of French Canadians from Quebec.^13 Additional immigrant communities, including Albanians, Italians, and eastern Europeans, later settled in Biddeford as textile production expanded.^14 Entire neighborhoods developed around the mills, with churches, schools, and boarding houses serving the growing industrial population.

Working conditions inside the mills reflected the realities of nineteenth-century factory labor. Employees typically worked ten- to twelve-hour shifts in noisy weaving rooms filled with cotton dust and airborne fibers.^15 Women and children composed a significant portion of the workforce during the early decades of operation. Supervisors closely monitored production speed and machine efficiency, while workers endured dangerous machinery, poor ventilation, and repetitive labor.^16 Despite these conditions, mill employment provided economic stability for many immigrant families and contributed to the growth of Biddeford’s middle and working classes.

Pepperell Manufacturing expanded significantly during the late nineteenth century through modernization and consolidation. In 1899, the company acquired the neighboring Laconia Mills operation, greatly increasing its production capacity.^17 New buildings incorporated improved industrial architecture, including fire-resistant brick construction and enhanced lighting systems. One of the most distinctive structures was Mill #13, completed in 1911 with a sawtooth roof that maximized natural daylight within weaving spaces before widespread fluorescent lighting.^18

The Biddeford-Saco mill district reached its industrial peak during the early twentieth century. At its height, the mills employed approximately 12,000 workers across multiple complexes along the river.^19 Textile products manufactured at Pepperell were distributed throughout the United States and exported internationally. The mills also stimulated the development of railroads, commercial districts, housing construction, and supporting industries throughout York County.

Despite this prosperity, the textile industry in New England began to decline during the early twentieth century. Southern textile manufacturers increasingly outcompeted northern mills because of lower labor costs, weaker unions, reduced taxes, and proximity to raw cotton supplies.^20 Technological changes also diminished the importance of river-powered manufacturing centers like Biddeford. New southern factories were often more modern, efficient, and easier to expand than the aging multi-story mills of New England.^21

Labor unrest and economic instability further contributed to industrial decline. Textile workers throughout New England organized strikes in response to wage reductions and worsening working conditions during the 1920s and 1930s.^22 Although Pepperell attempted to modernize production and diversify into synthetic materials and nonwoven products, employment steadily decreased after World War II. Increasing global competition and the movement of manufacturing overseas accelerated the collapse of the domestic textile industry during the second half of the twentieth century.^23

The company eventually became associated with larger corporate consolidations, including WestPoint Pepperell. While some textile production continued into the late twentieth century, the mills no longer operated at their historic scale. In 2009, the final textile manufacturing operations ceased in Biddeford, ending more than 150 years of continuous industrial production.^24

Although manufacturing disappeared, the Pepperell mill complex survived as one of the largest historic industrial sites in Maine. During the early twenty-first century, preservationists and developers converted the buildings into apartments, offices, artist studios, restaurants, and commercial spaces.^25 Today, the former mills remain central to Biddeford’s identity and serve as enduring reminders of the industrial era that shaped the city’s economic and cultural history.

Footnotes

1. Bryant F. Tolles Jr., The Textile Mill in Early New England (Hanover, NH: University Press of New England, 1973), 44–48.

2. Pepperell Manufacturing Company, The Romance of Pepperell: A Brief Account of How a Great Industry Developed at Biddeford (Biddeford, ME: Pepperell Manufacturing Company, 1921), 3–5.

3. Maine Historic Preservation Commission, Biddeford-Saco Mills Historic District National Register Nomination Form (Augusta: Maine Historic Preservation Commission, 1978), 8.

4. Pepperell Manufacturing Company, The Romance of Pepperell, 6–10.

5. Maine Historic Preservation Commission, Biddeford-Saco Mills Historic District, 11.

6. Ibid., 12–14.

7. Louis C. Hunter, A History of Industrial Power in the United States, 1780–1930, vol. 1, Waterpower in the Century of the Steam Engine (Charlottesville: University Press of Virginia, 1979), 233–240.

8. Patrick M. Malone, The Skulking Way of War: Technology and Tactics among the New England Indians (Baltimore: Johns Hopkins University Press, 1991), 17–18.

9. Tolles, The Textile Mill in Early New England, 83–91.

10. David A. Hounshell, From the American System to Mass Production, 1800–1932 (Baltimore: Johns Hopkins University Press, 1984), 67–74.

11. Pepperell Manufacturing Company, The Romance of Pepperell, 15–22.

12. Gary Kulik and Julia C. Bonham, Rhode Island: An Inventory of Historic Engineering and Industrial Sites (Washington, DC: Historic American Engineering Record, 1978), 214–216.

13. Yves Roby, The Franco-Americans of New England: Dreams and Realities (Montreal: McGill-Queen’s University Press, 2004), 52–59.

14. Maine Historic Preservation Commission, Biddeford-Saco Mills Historic District, 16.

15. Thomas Dublin, Women at Work: The Transformation of Work and Community in Lowell, Massachusetts, 1826–1860 (New York: Columbia University Press, 1979), 121–127.

16. Ibid., 128–132.

17. Maine Historic Preservation Commission, Biddeford-Saco Mills Historic District, 18.

18. Ibid., 20.

19. Roby, The Franco-Americans of New England, 61.

20. Gavin Wright, Old South, New South: Revolutions in the Southern Economy since the Civil War (New York: Basic Books, 1986), 143–150.

21. William Lazonick, Competitive Advantage on the Shop Floor (Cambridge, MA: Harvard University Press, 1990), 219–226.

22. Jeremy Brecher, Strike! (Boston: South End Press, 1972), 139–144.

23. Lazonick, Competitive Advantage on the Shop Floor, 248–254.

24. Maine Historic Preservation Commission, Biddeford-Saco Mills Historic District, 24.

25. Richard Candee, Building Portsmouth: The Neighborhood Architecture of New Hampshire’s Oldest City (Charlottesville: University Press of Virginia, 2006), 301–305.

Bibliography

Brecher, Jeremy. Strike!. Boston: South End Press, 1972.

Candee, Richard. Building Portsmouth: The Neighborhood Architecture of New Hampshire’s Oldest City. Charlottesville: University Press of Virginia, 2006.

Dublin, Thomas. Women at Work: The Transformation of Work and Community in Lowell, Massachusetts, 1826–1860. New York: Columbia University Press, 1979.

Hounshell, David A. From the American System to Mass Production, 1800–1932. Baltimore: Johns Hopkins University Press, 1984.

Hunter, Louis C. A History of Industrial Power in the United States, 1780–1930. Vol. 1, Waterpower in the Century of the Steam Engine. Charlottesville: University Press of Virginia, 1979.

Kulik, Gary, and Julia C. Bonham. Rhode Island: An Inventory of Historic Engineering and Industrial Sites. Washington, DC: Historic American Engineering Record, 1978.

Lazonick, William. Competitive Advantage on the Shop Floor. Cambridge, MA: Harvard University Press, 1990.

Maine Historic Preservation Commission. Biddeford-Saco Mills Historic District National Register Nomination Form. Augusta: Maine Historic Preservation Commission, 1978.

Pepperell Manufacturing Company. The Romance of Pepperell: A Brief Account of How a Great Industry Developed at Biddeford. Biddeford, ME: Pepperell Manufacturing Company, 1921.

Roby, Yves. The Franco-Americans of New England: Dreams and Realities. Montreal: McGill-Queen’s University Press, 2004.

Tolles, Bryant F., Jr. The Textile Mill in Early New England. Hanover, NH: University Press of New England, 1973.

Wright, Gavin. Old South, New South: Revolutions in the Southern Economy since the Civil War. New York: Basic Books, 1986.