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PE ST AV.4-1 COpy
J. F.-STALCUP.
LUMBER CALCULATOR,
APPLICATION FILED IAN. 17, 1910,390,603.
Patented Apr. 25, 1911.
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Stalcup, James F. Lumber-Calculator, patent, April 25, 1911; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth513471/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.