A twelve-page report authored by John B. Yeon, chairman of the Pacific Northwest Regional Planning Commission's Columbia Gorge Committee, written to Mr. Lawrence Merriam, regional officer for the National Park Service's State Park Division, on the subject of a proposed interstate park in the Columbia River Gorge along both sides of the Columbia River. In the report, Yeon requests the support of the National Park Service in purchasing non-agricultural land to establish the park. Yeon describes five specific areas in the Gorge where the proposed land would be purchased: Cape Horn, Beacon Rock, White Salmon, Latourell, and Crown Point.

A report with appendices which outlines a proposal to establish an interstate park in the Columbia River Gorge along both sides of the Columbia River. In the report, John B. Yeun, chair of the Pacific Northwest Regional Planning Commission's Columbia Gorge Committee, argues in favor of establishing the park and discusses lands that would need to be purchased to establish the park. The 17 appendices include fold-out maps showing areas of the Gorge, population density in the Pacific Northwest, railroads and highways in the region, land ownership in the Gorge, and soil types in the Gorge; a list of currently owned properties in the Gorge; lists of delinquent taxes for properties to be purchased; photographs; and copies of statements and correspondence of officials regarding the proposed purchase of lands for the park.

7 pages of photographs show the areas under consideration for inclusion in a proposed interstate park in the Columbia River Gorge. 32 photos show the character of the terrain, scenic values, and existing development in the Cape Horn, Beacon Rock, Little White Salmon River, and Latourell areas of the gorge.

A 3-page statement of delinquent taxes on units of property in Skamania County, Washington recommended for acquisition as part of a proposed interstate park in the Columbia River Gorge. For each piece of property, the owner's name, legal description, township & range, acreage, and years in arrears are listed. The property locations are found within the Beacon Rock and the Little White Salmon River Canyon areas of the gorge.

A map showing the location of a proposed interstate park in the Columbia River Gorge in relation to soils in the area. Colored areas indicate the different types of soils and a red outline denotes proposed lands to be acquired for the project.

5 pages that list the ownership and legal description of properties in blocks G and H, identified as the Little White Salmon River Canyon area in the accompanying report. The list includes the names of property owners and information about the location of the lands and size of the acreage for each entry.

A map showing the Columbia Gorge with a scale of 1 inch to 1 mile. Areas colored in blue with a red border indicate proposed lands to be acquired for a proposed interstate park in the gorge. Other colored areas denote U.S. national forests, state parks, highway right of way, special problem areas, and state forests.

A map showing the location of a proposed interstate park in the Columbia River Gorge in relation to existing recreational areas in the Pacific Northwest. The map shows Washington, Oregon, Idaho, Montana, and parts of California, Nevada, Utah, and Wyoming. Shaded areas indicate recreational areas as well as national parks and monuments, national forests, Indian reservations, game preserves,and primitive areas. Concentric circles in red denote distances in increments of 50 miles from an epicenter located over the Columbia River just east of Portland, Oregon.