It's things like this that keep this hobby so interesting- thanks for posting and keep us updated.
Serial number is 29805. Thanks for the newspaper scans SWSC!
Eugene A. Haverfield
BIRTH 15 Feb 1886
Sedalia Township, Pettis County, Missouri, USA
DEATH 15 Aug 1951 (aged 65)
BURIAL
Mount Washington Cemetery
Lenapah, Nowata County, Oklahoma, USA
Yes, JADARE is correct, that info & photo came from Find a Grave - Millions of Cemetery Records. Another source is BillionGraves and I'm not a fan nor subscriber to ancestry.com but I do find a lot of good genealogy info at FamilySearch • Free Family Trees and Genealogy Archives . I attempted to see if Haverfield had any potential living relatives but could not identify any with a short search of those sites.How in the world did you pull that picture of his gravestone off??