Lost books. Lost books can be found in used paperback book stores. Find where those bastions of dusty books with wrinkled spines are in your region - they are a pot of gold at the end of the book search line. Lost Books can also be found in attics, at yard sales, and sometimes in specialty book stores ... It is one of those books endowed with the rare quality that, when mentioned in conversation, elicits two responses. Either the other person has never heard of it or they cannot stop talking about it. Such conversational phenomenon are giant X's on the treasure maps to the land of lost books.