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