Re: Henry Thomas Edwards
Found these on the Social Security Death Index. You'll want to write the SSA for photocopies of their SS-5 Application for a SS number. That is the closest thing you'll have to a birth certificate for either of them, since Mississippi didn't start keeping birth records until the 1920's
IZORAH EDWARDS 31 Mar 1892 May 1974 39759 (Starkville, Oktibbeha, MS) 425-60-2624 Mississippi
HENRY EDWARDS 01 Oct 1883 Oct 1970 39759 (Starkville, Oktibbeha, MS) 709-05-6188 Long-time or retired railroad workers
You also might be able to find info on Henry in the files of whatever railroad he worked for.