The collection consists of photocopies of detailed drawings of Portland, Oregon, buildings and residences by Robert O. Brown, with photocopies of rough maps of some areas of the city. The collection also contains notes by Brown on architectural styles and characteristics, and some photocopies of photographs of buildings and residences. Many areas of Portland are represented, with the northeast and southeast areas receiving the most attention. Also included is a copy of a 1978 article about Brown, "A Record of Our Past."