Memorandum with attached test of concrete (with Trip-L-Seal) gasoline storage, 1942-12-04, A&M 1500, Box 6, Folder 5, Harley Martin Kilgore (1893-1956), Senator, Papers, West Virginia University Libraries, West Virginia University, Morgantown, WV. https://congressarchives.org/catalog/wvul_am1500_b6_f05_0014 (accessed March 17, 2026).
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