found: Barnsdall times, January 5, 1922:p.1 (Beginning January 1, 1922 the town of Bigheart, Oklahoma officially ceased to exist, and in its place the name Barnsdall now applies)
found: Oklahoma Historical Society, viewed September 14, 2020:Barnsdall page (Originally named Bigheart for Osage Chief James Bigheart, the community was officially renamed in honor of Theodore N. Barnsdall and his Barnsdall Oil Company on January 1, 1922 ... Bigheart began as a 160-acre townsite along the Midland Valley Railway in March 1905).
found: Comm. atlas & market. guide, 1979(Barnsdall, Osage County)
found: GeoNames, algorithmically matched, 2009(ppl; 36°33ʹ43ʺN 096°09ʹ42ʺW)