Volume IV: The Irish Book in English 1800-1891 details the story of the book in Ireland during the nineteenth century, when Ireland was integrated into the United Kingdom. The chapters in this volume explore book production and distribution and the differing of ways in which publishing existed in Dublin, Belfast, and the provinces.

"Ïn this volume an attempt is made to embody, in narrative form, the results of a collation of printed and unpublished documents and chronicles, bearing upon the chief administrators of the English government in Ireland, from its establishment to the termination of the reign of Henry VII in 1509"--Preface.