Catalogue of the John Boyd Thacher Collection of IncunabulFrederick William Ashley, John Boyd Thacher, Emma Treadwell Thacher · First published 2010Open the Tome
The story of the Vollbehr collection of incunabulaFrederick William Ashley · First published 1934Open the Tome
The Vollbehr incunabula and the Book of booksFrederick William Ashley · First published 1932Open the Tome
