Louisville Main LibraryThe Louisville Main Library is the main branch of the Louisville Free [Public Library], which is a public library system serving the city of Louisville, Kentucky.Description and historyThe Louisville Main Library is sited at Fourth and York streets, south of Broadway, adjacent to downtown Louisville. In 1969, a $4 million north building was added to the classicizing Carnegie structure. This provided an additional of floor space, compared to the in the original building.