Here is the 1940 census with what would appear to be 4 children.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VRRL-PP6 : accessed 25 February 2017), Oma L O Reiley in household of Martin P O Reiley, Ward 1, Roseburg, Benson Election Precinct, Douglas, Oregon, United States; citing enumeration district (ED) 10-1, sheet 4B, line 71, family 97, 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 3360.