Consists of editorial and personal correspondence received by Langford from an assortment of English authors and noblemen, including Sir Archibald Alison, John Walter Cross, Charles Grey, Sir Arthur Helps, Alexander Williams Kinglake, Sir Theodore Martin, and Samuel Warren. Four letters are addressed to the Blackwoods, or the firm directly, not to Langford. Furthermore, there are three miscellaneous letters located at the end of the alphabetical list of correspondents; it is unknown if these are addressed to Langford. Also included is the indenture for Langford's apprenticeship as a stationer under James Nesbit.

All the letters are autographed and signed by the correspondent to J. M. Langford, unless otherwise stated. The descriptions of the letters come from the dealer catalog.