My research brings these items: 1930 census Granite, Sacramento, CA George A McKee, age 30, married at age 27, vet of WWI, b WY, prisoner at Folson.
1920 census Sheridan Ward 3, Sheridan, WY George McKee, 19, grandson of Mrs. [Olive] L. Haselton [maternal grandmother]
WWI draft reg. 1917-1918, Campbell, WY George McKee, dob Feb 3, 1900, b Moorcroft, Crook county, WY, med ht and slender build, brown eyes & hair, cowboy, relative is Mrs. O.E. Haselton in Sheridan, WY
1910 census Moorcroft, Crook, WY George A. McKee, age 10, living w/grandmother Olive Haselton, who runs a rooming house and is a dress maker, b. PA.
Olive Haselton had 3 children, and in 1910 only her son Frank was alive.Her grandson George, by dau Myrtle [6/1876-bef 1910] and William McKee [10/1870-bef 1910] seems to have been raised by her since childhood.William and Myrtle are in the 1900 census of Cheyenne Ward 3, Laramie, WY, where McKee states he was b. Iowa, as were his parents.I haven't found them yet.