I found Mary Beaty listed in the Mound Valley Cemetery records in the Custer County Cemetery Book. She was the only Beaty listed, born 1841- died 1912 Block 48 lot 2 space 2.
a Sarah J. Campbell born 2-20-1854 - died 9-27-1926, block 62 lot 3 space 2, there are other 14 Campbells listed in the 1990 book, & WPWGS has updated it & printed 2nd book in 2004.
Matilda Stevenson ? isn't listed in the old book. Hugh S. Stevenson 1889-1959 John Fred Stevenson 1861 - 1936 Sarah Francis Stevenson 1-3-1959 12-16-1919wife of J.F. all in Block 43 lot 2 spaces 1-2- & 4
Happy Trails on your searching, Kim Dresser, Western Plains Genealogical Society Weatherford, OK