While it is difficult to quantify the success or failure of WPA Library Projects relative to other WPA programs, “what is incontestable is the fact that the library projects provided much-needed employment for mostly female workers, recruited many to librarianship in at least semiprofessional jobs, and retained librarians who may have left the profession for other work had employment not come through federal relief...the WPA subsidized several new ventures in readership services such as the widespread use of bookmobiles and supervised reading rooms-services that became permanent in post-depression and postwar American libraries.”  