found: William Howard Taft, c1908:t.p. (Robert Lee Dunn)
found: Gusts of Popular Feeling blog, viewed online Oct. 17, 2016(R.L. Dunn; Robert Lee Dunn; Russo-Japanese War correspondent; photographer and correspondent for Harper's and Collier's Weekly; born in Memphis, Tennessee, 1874; author of William Howard Taft, American, 1908; proposed building plans for the San Francisco-Oakland Bay Bridge, and eventually settled outside of the town, Columbia, Tuolumne County, CA; property had a sizable limestone deposit and he developed the Port Stockton Cement Company; died May 27, 1953) - http://populargusts.blogspot.com/2009/04/correction-russo-japanese-war.html
found: Port Stockton Cement Company records, 1926-1977, The Bancroft Library, University of California, Berkeley(Robert Lee Dunn; incorporated the Port Stockton Cement Company in 1929)
found: Find A Grave website, search Oct. 17, 2016(Robert Lee Dunn; birth: Oct 15, 1874, Memphis, Tennessee; death: May 27, 1953, Columbia, California)
found: California death index, 1940-1997, search via Ancestry.com, Oct. 17, 2016(Robert Lee Dunn; gender: male: birth date: 15 Oct 1874; birth place: Tennessee; death date; 27 May 1953; death place: Tuolumne [County])
found: OCLC, Oct. 17, 2016(access points: Dunn, Robert Lee; usage: Robert Lee Dunn; R.L. Dunn)