Robert W. Walker Enlisted: 28 Aug 1942, Boise, Idaho in U. S. Army Born: 1919, Idaho Education: one year high school Occupation: unskilled construction Marital Status: single without dependents Source: U. S. World War II Army Enlistment Records 1938-1946
Robert Walker Born: 12 march 1919, Pocatello, Bannock, Idaho Died: 20 May 1967, Denver, Denver, Colorado Buried: 24 May 1967, Riverside Cemetery, Adams County, Colorado Source: Cheeney-Macpherson family tree, ancestry.com. Most larger libraries provide free access to ancestry.com.
HOWEVER, I searched for him online at that cemetery and didn't find him. You should contact the cemetery. Colorado doesn't release a death index so that's no help.
There are two more volunteers at www.gengathering.com. You do have to create a user ID and password to enter this web site but access to the volunteer info IS free.
Robert William Walker Born: 9 Nov 1883, Carleton, Illinois Residence 1942: California Hotel, between 11 & 12th, Main, Boise, Idaho Occupation: R. H. McCabe, Labor Temple, Carpenter City Boise Nearest Relative: rOBERT W. Walker, jr., Stibnite, ID Source: U. S. World War II Registration Cards 1942
Didn't find his death info.
1940 Salt Lake, Utah Zella Walker, b. ID, head, education=8th grade, no occupation Frances, dau, b. UT, 16 Fred G., b. UT, 13 David E., b. UT, 11