The 1920 Pitkin Colorado census, Aspen:
Peter R. Lipson, age 72, wd, to US 1866, naturalized 1872, (b) Germany, parents (b) Germany, speaks German. Table Man ??Mine.
You listed 1910 Gunnison Co. CO census, Peter Lipson is also on 1900 Garfield Co. Colorado census, Cardiff, Dist. 39:
Peter Lipson, Boarder, (b) Jan 1847, age 53, single, (b) Germany, parents (b) Germany. To US 1865, no. of years in US: 35. Section Laborer.
Check Gunnison Co. death records. I think there's a list posted with burials in the Gunnison Cemetery, but I don't have the URL immediately handy.