The Dakota Mission (ABCFM)

“In Memory of Thomas S. Williamson M.D.” in Collections of the Minnesota Historical Society III p. 372-385 (1880) contained in free e-book

“Memorial Notices of Rev. Gideon H. Pond” in Collections of the Minnesota Historical Society III p. 356-371 (1880) contained in free e-book

Barton, Winifred John P. Williamson, Brother to the Sioux (1919 ) free e-book

Hancock, Joseph W. “Missionary Work at Red Wing 1849-1852” in Collections of the Minnesota Historical Society X p. 165-178 (1905) contained in free e-book

Neill, E. D. “A Sketch of Joseph Renville” in Collections of the Minnesota Historical Society I p. 196-206 (1872) contained in free e-book

Riggs, Stephen R. Mary and I: Forty Years Among the Sioux (1887) free e-book

Riggs, Stephen R. “Protestant Missions in the Northwest” in Collections of the Minnesota Historical Society IX p. 117-188 (1894) contained in free e-book

Riggs, S. R. “The Dakota Language” in Collections of the Minnesota Historical Society I p. 89- (1872) contained in free e-book

Riggs, Stephen R. “The Dakota Mission” in Collections of the Minnesota Historical Society III p. 115-128 (1880) contained in free e-book

Williams, Isabella Burgess Riggs By the Great Wall (1909) free e-book

Williamson, Thomas S. “Napeshnesdoota, A Dakota Christian” in Collections of the Minnesota Historical Society III p. 188-191 (1880) contained in free e-book

Williamson, T. S. “Who Were the First Men?” in Collections of the Minnesota Historical Society I p. 295-301 (1872) contained in free e-book