Text in Italian and French. A collection of scholarly studies of bibliography and history of manuscripts in the Vatican Library in honor of De Marinis, a bookseller and scholar. Volume I includes an essay on De Marinis by the editor. Each volume with a table of contents and bibliography. Volume IV with comprehensive indices of names and manuscripts. Black and white plates. Printed by Giovanni Mardesteig at the Stamperia Valdonega, Verona, Italy. Bumped corners, else fine.