Jan Erkert founded jansdances in 1979 as a vehicle for her own works. The company evolved to Jan Erkert & Dancers and explored collaboration with other types of artists and dance presentations. The records include awards, clippings, newsletters, photographs, publicity materials, and videocassettes.

MoMing was a center in Chicago's Lakeview neighborhood for dance training and avant-garde performance as well as an art gallery. It was formed in 1974 by Jackie Radis, Jim Self, Susan Kimmelman, Eric Trules, Kasia Mintch, Tem Horowitz, and Sally Banes. Along with local artists, it hosted many guest dancers and artists of renown, including Trisha Brown, Bill T. Jones, Mark Morris, and Meredith Monk. It officially dissolved in 1991.

Brochures, clippings, and reviews covering Mattei's career as a dancer at MoMing Dance and Arts Center in Chicago. Also includes some clippings about Mattei's sometime dance partner Charlie Vernon; about dancer-choreographer Jan Bartoszek; and about Chicago performance space Links Hall.