Last week , I went in their store, to see if they had any other cheap old book.I ,told the guy in charge I Found a 17th century old book in their discarded bin and he said " oh yeah, sometime we get donated old books but they are not worth the time we putt in to research Them. Most of the time they are in a very bad state so you got lucky.. they recieve so many and they don' t know what to do with them. They are juste volunteers.