Hi Rochelle, since he's born in 1939, he should be in the 1940 census. Would you please post that census and any other way, other record, or family story, to help identify him? There wasn't a Henry Whitfield b 1939 in Oklahoma who turned up on Ancestry.com when I did a very quick search of the 1940 census (but maybe you found him?). There's a Henry C Whitfield in Texas, a Henry C Whitfield in California, etc. There's a Henry Whitfield born in Oklahoma in Dec 1925, but that doesn't fit your criteria. I'll go ahead and post the Henry b 1925, "just in case."
1940 US census Vinita, Craig, Oklahoma Henry Whitfield 40 Dora Whitfield 35 John D Whitfield 19 Mary Alice Whitfield 18 Dorothy Whitfield 16 Henry Whitfield 14 born about 1926 in Oklahoma Juanita Whitfield 11 Robert Whitfield 8 Wanda May Whitfield 7 Charles Whitfield 5 Nancy Ann Whitfield 2 James F Whitfield 0