Gruber and Graves - stereo minds

Title from PDF caption (viewed on January 25, 2017)., "Join us in celebration of Oregon history. 'A 3D viewing device' Historical Marker Dedication, Saturday May 16, 2015 - 1:00 p.m. The Oregon Caves Chateau, Cave Junction, Oregon.", Historic marker commemorating the meeting of William B. Gruber and Harold J. Graves who together formed the View-Master company., This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes., Mode of access: Internet from the Oregon Government Publications Collection., Text in English.
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This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.