The bulk of the collection consists of correspondence, much of it related to the Columbia River Gorge, and of documents relating to Columbia Gorge legislation. Collection also includes historical biographies by Eldon G. Chuinard on John McLoughlin and Marcus Whitman.

Reminiscences of landscape architect and planner Jurgen A. Hess (born 1941) about implementation of the Columbia River Gorge National Scenic Area Act, as well as materials relating to opposition to the act, including a document by Lex Loeb. Hess worked for the U.S. Forest Service for more than 30 years, and was the service's planning director for the Columbia River Gorge National Scenic Area.

Oral history interview with Gertrude Glutsch Jensen conducted by Roberta Watts from December 7, 1977, to January 17, 1978. Jensen was active in the campaign to preserve the Columbia River Gorge in Oregon and Washington.

Remarks delivered by Gertrude Glutsch Jensen from her home in Portland, Oregon. In the speech, which was broadcast on KOIN radio, she discusses ongoing conflict over the preservation of the Columbia River Gorge.

Remarks delivered by Gertrude Glutsch Jensen on May 28, 1981. She speaks about regarding ongoing efforts to preserve the Columbia River Gorge.