The collection consists of materials relating to the life and career of Frederick H. Strong, a businessman in Portland, Oregon. The bulk of the collection consists of architectural plans for and photographs of the Portland Public Market building. Also of note are photographs depicting Portland, Oregon, during the 1890s and 1900s, including the 1894 flood and the interior of the Ladd and Tilton Bank. Other materials include: newspaper clippings about the Portland Public Market; a publication of Oregon Supreme Court cases decided in 1946, including the case Public Market Co. v. City of Portland; a photograph of the Bonny Slope fire, circa 1940; and a folder of clippings, an architectural publication, and ephemera gathered by Strong's daughter and son-in-law, Elizabeth K. and Charles E. Wright.