Physical Library

U.S.G.L. maintains a physical library, dedicated the “William E. Heidrick Memorial Library”, which contains books, papers, and other materials of historical or technical interest. In 2025 we secured a dedicated space in Tacoma, Washington to house this library and other archive materials.

The library catalog is available here.

A lending policy is in development and will be announced once the setup of the physical location is complete.

Members of O.T.O. in good standing of KRE and higher may visit the library by appointment with the librarian (librarian@oto-usa.org). Members not yet KRE will require special permission from the Grand Master to visit, write to the GSG (gsg@oto-usa.org) with requests.

While the precise location of the library facility will not be announced publicly, we have established a P.O. Box for library-related shipments:

Ordo Templi Orientis U.S.A.
P.O. Box 102
Mountlake Terrace, WA 98043