A companion volume to Wing’s Short-Title Catalogue, this book provides the first comprehensive union list of all known British serials of the period. Each serial is listed alphabetically by first title. The first entry for a particular periodical includes a uniform title along with inclusive dates, format, average length, periodicity, editor or author (if known), and bibliographical references. Subsequent issue-by-issue entries list title, number, inclusive dates, place, imprint, year, and the libraries holding a copy of that issue.

The volume contains six indexes, covering period, editor or author, publisher or printer, place, language, and subject. Of particular usefulness for historians is a month-by-month chronological index.