Milburn G. "Mel" Apt (April 9, 1924 – September 27, 1956) was a US test pilot, and the first man to attain speeds faster than Mach 3. He was killed in the destruction of the Bell X-2 during the record-setting flight that exceeded Mach 3.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:J5H5-WY8 : 19 May 2014), Milburn Apt, Sep 1956; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
"California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VPDK-4SQ : 26 November 2014), Milburn Grant Apt, 27 Sep 1956; Department of Public Health Services, Sacramento.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X77G-8N8 : accessed 17 December 2017), Milburn Apt in household of Oley G Apt, Colfax, Wilson, Kansas, United States; citing enumeration district (ED) ED 7, sheet 1A, line 25, family 6, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 726; FHL microfilm 2,340,461.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VR2V-643 : accessed 17 December 2017), Milburn G Apt in household of Oley G Apt, Colfax Township, Wilson, Kansas, United States; citing enumeration district (ED) 103-7, sheet 8B, line 76, family 177, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 1265.
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