General papers and correspondence: minute books; lists of members; account books; bills; reports, notices of meetings, printed forms and pamphlets; and secretary's correspondence. The correspondents include John W. Hewett (Secretary), Matthew H. Bloxam, Benjamin Webb (Ecclesiological Society), John H. Parker, Philip Lightfoot (Exeter Diocesan Architectural Society), William H. Walsh, Edward Meadows, John H. Hopkins, George A. Poole and Thomas James (Architectural Society of Archdeaconry of Northampton), Frederick P. Lowe and Edward Trollope (Lincoln Diocesan Architectural Society), Henry T. Braithwaite, Sabine Baring-Gould, Charles J. Evans (Secretary), Edward L. Cutts (Essex Archaeological Society), George E. Corrie, William Mort Thompson, John Willis Clark (Secretary), and William M. Fawcett (Secretary).
 Papers and letters on architectural matters, including prospectuses, reports and pamphlets. The correspondents include Daniel Winham, Hugh M. Short, Marmaduke Cockin, William G. Tweedy, Thomas H. Tait, William White (architectural sketches of Mollington church), and William Greenslade.
 Ely Cathedral Undergraduate Window project, 1847-57: accounts, subscription lists and bills, and correspondence. The correspondents include William Wailes and Edward B. Sparke.
 Restoration of St Andrew's, Barnwell Abbey: accounts, architects and craftsmens' estimates, bills, prospectuses and correspondence. The correspondents include: Sparks B. Sealy, Jonathan H. Titcomb, Sir John Ramsden, Richard R. Rowe, John Gibson, William Selwyn, and George Peacock.