"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VBVQ-B3X : 27 July 2019), Laurance J Brown, Union Township, Grady, Oklahoma, United States; citing enumeration district (ED) 26-40, sheet 9A, line 24, family 170, 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 3295.
Find A Grave, database and images (https://www.findagrave.com : accessed 07 September 2019), memorial page for Lawrence J Brown (29 Oct 1909–19 Nov 1990), Find A Grave Memorial no. 63419203, citing Evergreen Cemetery, Minco, Grady County, Oklahoma, USA ; Maintained by Nancy Charlton (contributor 47379126) .