From "Cemeteries of Okfuskee County Oklahoma", I found these burials in Oakdale Cemetery.According to the book Oakdale Cemetery is located on the north side of Paden, then east on county road; Sec. 15, Township 12N, Range 7 east.The statement was made that it is well kept and still in use.
J. H. Maxwell, 2 January 1861 - 23 August 1943.The names were in alphabetical order rather than by location so I don't know whether this was his wife: Dovie Maxwell, 8 January 1878 - 3 January 1966. You'll note there is a little difference from your given dates, but mistakes in tombstones, or transcriptions, is not unusual.It does seem to be your James Henry Maxwell.
There were no other Maxwells listed for this cemetery.I did not find the Scotts you described, although there were some Scott names listed.
I did not see the date for when the cemetery was canvassed, although the date was probably given.The library where I found this book does have 2 other volumes, but I didn't have time to do more looking.I hope this helps some.