Since a lastmaker could make at least three times more lasts a day with a machine than by hand, it wasn't long before handmade lasts were rare in New England. (Cooper in McGaw 1994:319)
And here's a signal source:
AUTHOR Cooper, Carolyn. TITLE Shaping invention : Thomas Blanchard's machinery and patent management in nineteenth-century America / Carolyn C. Cooper. PUBLISHER New York : Columbia University Press, 1991. SUBJECT Woodworking machinery -- United States -- Patents -- History -- 19th century. Inventors -- United States -- Biography. Blanchard, Thomas, 1788-1864. 1 > Leyburn Library TS850 .C476 1991