Engraving of an earth closet, a basic type of toilet with dry earth used to cover excrement. Dated 19th Century Stock Photo - Alamy
A PAIR OF 1869 HARTFORD EARTH-CLOSET COMPOSTING TOILET PROMOTIONAL PAMPHLETS by THE EARTH CLOSET COMPANY - First edition - 1869 - from BUCKINGHAM BOOKS (SKU: 43321)
Pail closet - Wikipedia
Gardez L'eau! Or, The Toilet - Sharon Lathan, Novelist
The modern earth closet: Environmental Protection in Switzerland