LeZotte also gives readers a sense of M.V.S.L. (Martha's Vineyard Sign Language), used by the islanders through the mid-1900s but never fully documented, by combining "home signs" she used as a child with variations of American Sign Language.
Source: wiktionary
Now, you know that the classical analytical explanation of agoraphobia of the early 1900s was that it represented a street phobia because the patient equated streetwalking with prostitutional activity[…]
Source: wiktionary
There are never-published treasures like British entrepreneur William Turner's scenes of Shanghai life in the early 1900s — probably taken with a homemade pinhole camera.
Source: wiktionary