The 1910 to 1930 censuses and the Tulsa City Directories from 1916 to 1928 show that George Barker worked in a variety of generally low-skilled jobs.
Folketællinger fra 1910 til 1930, og Tulsa City Directories fra 1916 til 1928 viser, at George Barker arbejdede i en række generelt lavtuddannede jobs.