The list has about 280 author entries covering at least 1800 editions of more than 365 titles. Included are all architectural books known by the compilers that were written between 1460 and 1640 regardless of when they were first published. Dubious editions are identified, and "ghosts" avoided or described as much. Also included is a comprehensive bibliography of the De Architectura of Vitruvius as an essential component of the period covered. The book is a quick-reference guide for all scholars, collectors, booksellers and librarians who have any dealings with or interest in early literature of architecture.