Searching for obit or death certificate for Edwin Sherwood

SSN index, Edwin Sherwood, b 4 March 1913, died in Columbus Ohio in May 2000.

It appears he is buried in Sheridan.
Find-a-grave shows Edwin M Sherwood, b 4 Mar 1913, Lorain OH, d 13 May 2000. Fye E Sherwood listed on same stone, 1914-2002. Listed as in Sheridan Municipal Cemetery, WY burial(lot 99, block 12).
Casper WY obit index: SHERWOOD, Edwin M; 87; born Lorraine OH>Sheridan WY; mothers maiden name, WHITE; 19 May 2000