This series contains the records of Raymond Pitcairn both as Trustee of the Bryn Athyn Cathedral and as owner (through the West Chelten Company?) of the Bryn Athyn Stone Company and Bryn Athyn Supply Company. These includes contracts, orders, invoices, timesheets and other records relating to the above listed companies as well as the architects (Cram, Goodhue and Ferguson) and the general contractor (Pringle Borthwick). Some of the early records name John Pitcairn as the trustee or owner, but his death in 1916 transferred trusteeship over to Raymond.