Revision history of "File:1981 ochi-report crh-mileposts pp87&89.png"

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  • curprev 13:48, 11 May 2021‎ Jonathan talk contribs‎ 436 bytes +436‎ A comparison of the original Columbia River Highway concrete mileposts and the ones proposed by Diane Ochi in her 1981 report. The ones reconstructed for the highway in the 1990s did not incorporate Ochi's enhancements.<br /> 🖼 Ochi, Diane. [http://npshistory.com/publications/columbia-river-highway.pdf ''Columbia River Highway: Options for Conservation and Reuse''], National Park Service, pp. 87 & 89<br /> 📆 1981
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