The 1882 George Bruce Type Specimen Book 05 / 06 / 22 https://www.reddit.com/r/typography/comments/nunn4i/one_of_my_favorite_resources_the_1882_george/https://books.google.fr/books?id=sPFBAAAAYAAJ&printsec=frontcover&redir_esc=y#v=onepage&q&f=false
Robert Smithson, A heap of language, 1966 05 / 06 / 22 https://holtsmithsonfoundation.org/heap-language-0
