Mark Twain invented bra clasps.

Lapham's Quarterly — What's this? Oh nothing. Just Mark Twain's

Who invented the elastic bra clasp, Trivia Questions

Interesting facts, Page 43

Mark Twain and the Bra Strap

Real reason why bras fasten at the back instead of the front

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Mark Twain, Inventor! - Connecticut Explored

This FAMOUS author invented the bra clasp.

Curious Questions: Did Mark Twain really invent the bra strap