Leedey is in Dewey Co., OK.
Often, you can check
www.findagrave.com to see if someone has entered information about those buried in a certain cemetery in the US. Clarence doesn't show up there.
The site
www.deathindexes.com tells what records are available for each state. I don't see anything for Dewey, but there was a link for Oklahoma Cemeteries, and on this site is a bunch of cemetery listings. You almost have to check each one, though.
Clarence and Pearl are in the 1910 census (which was taken on April 26, 1910) at which time they were living with Pearl's parents, Burgelia and Sarah Bailey, in Custer Co., Barnitz Twp. That may be an alternate death location.
http://search.ancestry.com/iexec/?htx=View&r=an&dbid...