A lot of sewing techniques being taught and used today came from the mind of one innovator: Helen Blanchard. She held 28 patents, most related to sewing, and she shaped the way the garment industry functioned.
Research:

Unearthed! In July 2026, Part 2
45:21

Unearthed! In July 2026, Part 1
41:36

SYMHC Classics: Raincoats
39:10