By the early 1880's, whalebone was

/packs/exhibitions/learning_materia

History of Corsets 1780-1912

Victorian Era Women's Fashions: From Hoop Skirts to Bustles

Whaling in the United States - Wikipedia

Fashion History Blog

Corsets, crinolines and bustles: fashionable Victorian underwear · V&A

The Curse Of Marble Island

corset whalebone versus steel bones 1880s 1890s

PDF] Estimates of the landed catch of right (and other whalebone

History of Corsets 1780-1912

Beat to Quarters — Scrimshaw whale bone Ditty Box, America c. 1880