The Island of Lost Maps, a popular little book written by Miles Harvey, recently came to the attention of many librarians and the public at large on the value of rare maps. Its author explores the theft of historical maps from some of the world’s most famous libraries. Looking at some of the titles described by Harvey, most “documents” librarians would recognize that some of the titles were originally published by the U.S. government in House and Senate Documents and compiled into the U.S. Congressional Serial Set, hereafter referred to as the Serial Set.