Tah-koo wah-kań: or, The gospel among the Dakotas./ By Stephen R. Riggs ... With an introd. by S.B. Treat.

xxxvi, 491 p. : ill. ; 18 cm."Written for the Congregational Sabbath-school and publishing society and approved by the Committee of publication."Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Digital Library Initiatives, 1996. Includes both TIFF files and keyword searchable text. [Making of America] This volume is made possible by a grant from the Andrew W. Mellon Foundation