[An X-40 utility mock-up on a tripod] Side: 1 of 1
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[An X-40 utility mock-up on a tripod], photograph, September 29, 1954; (https://texashistory.unt.edu/ark:/67531/metadc950137/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Special Collections.