Correspondence with the following individuals: Lydia J. Trowbridge, a cousin of Donizetta Jones Hewett and supporter of the School of American Research; and Muscogee singer and performer Tsianina. Topics include: the School of American Research; summer field schools; Trowbridge's financial support of the SAR; Trowbridge's will bequeathing artifacts and books to the SAR and Museum of New Mexico; Tsianina's performances and tours; Native American rights and welfare; Tsianina's plans for a Native American arts program; a "Memorandum on Tsianina Foundation" at the SAR; and various personal and professional matters.