Chinook to the rescue
From Everybody’s Magazine (did O. Henry really edit it?). Volume X, number 2 (February 1904), page 292.
“Delate hyas kloshe papah. Halo kultus wawa kopa ocoke Konaway Tilacums. Delate skoom kumamook [sic]. Nika delate kloshe tumtum. Mika potlatch delate skookum ehkahnams. Mika six, ___________.”
A letter from Ketchikan, Alaska.
“It is truly a very good paper. No foolish talk in this ‘All-People’. It is a powerful piece of work, in my opinion. I like it very much. You give very good stories. Your friend, _____.”