Ellen Curtis Demorest and Ebeneezer Butterick are the two names most often invoked as the start of multi-sized patterns printed for home sewists. Once they proved it was a viable business, a lot of other offerings appeared.
Research:

James Braid, Surgeon and Father of Hypnotism
43:36

Gladys Bentley
40:09

SYMHC Classics: Moms Mabley
33:10