Lampe, R., Moser, P. "Do Patent Pools Encourage Innovation? Evidence from the 19th-Century Sewing Machine Industry" (2009)
"1846 Howe Jr.'s Sewing Machine Patent Model". National Museum of American History. Retrieved 2016-01-13. http://americanhistory.si.edu/collections/search/object/nmah_630930
Depew, Chauncey Mitchell (1895-01-01). One Hundred Years of American Commerce. D.O. Haynes. https://archive.org/details/onehundredyears00depegoog
Depew, Chauncey Mitchell (1895-01-01). One Hundred Years of American Commerce. D.O. Haynes. https://archive.org/details/onehundredyears00depegoog
"The 'Sewing-Machine Combination'" (PDF). Retrieved 13 January 2016. http://www.sil.si.edu/digitalcollections/hst/cooper/pdf/SIL10-08999-0055.pdf
"How Singer Won the Sewing Machine War". Smithsonian. Retrieved 2016-01-13. http://www.smithsonianmag.com/smithsonian-institution/how-singer-won-sewing-machine-war-180955919/?no-ist
Barnard, Frederick Augustus Porter (1878). Johnson's New Universal Cyclopaedia: S-Z. A. J. Johnson & Son. https://books.google.com/books?id=KmYMAAAAYAAJ&pg=PA208&dq=new+universal+cyclopaedia+volume+6
Depew, Chauncey Mitchell (1895-01-01). One Hundred Years of American Commerce. D.O. Haynes. https://archive.org/details/onehundredyears00depegoog