These volumes list the names, addresses and dates of election of members of the Honourable Society of Cymmrodorion

A register of numbers, names, addresses, proposers, and dates of election of members of the Society, entered numerically

The volume comprises details of manuscript articles found or examined. Entered in tabular form, information is given on the date found or examined; registration number given; where the manuscript was found and what condition it was in; the name of the author; the number of pages, and any missing pages; date and size; details of publication; whether hanwritten or typescript, and what language; a classification code; and the name and address of the recipient if the manuscript was disposed of.

A register recording details of gifts received for distribution, including the nature of the gift, date received, name of donor, how the gift was received, any special purpose for the gift, and how it was distributed