John is listed in the Barton County Cemetery Directory published in 1984 as being in Shiloh Cemetery.
White's listed in Shiloh are:

White, John A. L. Mar 17, 1827 - Mar 8, 1904
ssw Mary T. Apr 21, 1832 - Oct 31, 1905

White, Jos. 1859 - 1921
ssw Jane T. 1859 - 1926

White, Inf dau. of J. & J.T. 1884 b&d
ssw Inf Bramblett b&d 1887

White, Beulah D. 1898 - 1924
ssw John J. 1896 - 1960

White, Raymond L. Jun 12, 1919-Jun 8, 1944
MO PFC 8Inf 2BN WWII

Those dying between 1910 and 1960 should be listed and can be viewed in the Missouri Death Certificate Database at the MO Secretary of States website. http://www.sos.mo.gov/archives/resources/deathcertificates/