Here's one clue:
Location of Camp Grayham (Graham)
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Posted by Larry Adams on June 16, 2001 at 15:39:36:
I'm still trying to find the specific location of Camp Grayham. John Atwood found in a letter from General Sterling Price to Major Jeff Thompson (20 May 1863) that he states that it was near Gainesville, AR. Has anyone uncovered any other information? Thanks.