
Technical pamphlet: Connor, Seymour V. and Skaggs, Jimmy M.
As best I can tell, it is a reprint of a report in the 1950 Panhandle-Plains (Museum) Historical Review ... pulled from the very first US Census in 1880.
Does not even look like the cover has been opened fully (and i didn't
(More information on request - can also be sent on approval)