Primarily concerns Haudenosaunee (Iroquois) matters, especially wampum, including specific items. Includes some letters to Speck from Glenn Black of the Indiana Historical Society, Kenneth Kidd of the Royal Ontario Museum, Alexander General ("Deskaheh"), Fred Washington of "Lenape Nation" in Oklahoma; copies of class handouts from an Anthropology course taught by Speck in 1927. Includes briefer mentions of Cochiti and Penobscot. Related correspondences in this collection include Alex General and Helen Harris.