I saw this building with my family in 1980 and 1988. I was wanting to find it again and take pictures of it, but didn't remember exactly where it was located. Finally found it quite easily in March 2008 in Cottonwood Canyon on the Dos Vaqueros Volando Ranch west of Mineral Mountain road. The road passes right by it.
Old Building on Dos Vaqueros Volando Ranch in 1980 and 1988