Sorry, but Irving Anderson's article, Sacajawea? Sakakawea? Sacagawea?: Spelling-Pronunciation-Meaning is no longer avaialble online.
Anderson, Irving W. "Sacajawea? - Sakakawea? - Sacagawea?: Spelling, Pronunciation, Meaning." WE PROCEEDED ON 1, no. 3 [Summer 1975] : 10-11.