Books by Charles Randolph Thomas:
Books in the extended shelves:
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Thomas, Charles Randolph, 1888-1931: Culverts and small bridges for country roads in North Carolina (Edwards & Broughton printing co., 1912), also by Thomas F. Hickerson and Thomas Felix Hickerson (page images at HathiTrust)
Find more by Charles Randolph Thomas at your library, or elsewhere.