The Bibliographical Decameron - Volume 1 : Or, Ten Days Pleasant Discourse upon Illuminated Manuscripts, and Subjects Connected with Early Engraving, Typography, and Bibliography

First published in 1817, this three-volume work by Thomas Frognall Dibdin (1776–1847) is an enthusiastic and well-illustrated exploration of bibliographical history from illuminated manuscripts to contemporary book auctions. Volume 1 presents a detailed survey of illuminated manuscripts and early printed books, with many illustrations throughout.

Bibliomania, the almost obsessive collecting of rare books and early editions by the aristocracy, which peaked in 1812 with the sale of the Valdarfer Boccaccio, was fuelled in no small part by the work of the bibliographer Thomas Frognall Dibdin (1776–1847). His most famous book, Bibliomania, popularised the word's use in England. The present work was first published in three volumes in 1817 and may be considered a continuation of Bibliomania in both style and content. Using a dialogue format with extensive footnotes, it covers all aspects of bibliography from early illuminated manuscripts and printed books through to contemporary book collectors and auctions. The work is notable for the number and quality of its illustrations. Volume 1 presents a detailed survey of illuminated manuscripts and early printed books, focusing on the continuity of illustration and decoration. Dibdin's Bibliomania (revised edition, 1811) and his Reminiscences of a Literary Life (1836) are also reissued in this series.