Mary Ellen Bute was a pioneer of abstract animation in the 1930s, and experimented with electronic imagery in the 1950s; we present three rarely seen works. Tarantella (1940, 4 mins) animates dance music; Imagination (1958, 3 mins), produced for The Steve Allen Show, interprets a King Sisters song; New Sensations in Sound (1959, 2 mins) was produced for RCA Victor sales meetings. (Color, Courtesy Cecile Starr.) Stan Brakhage considered the work of Swedish-born Gunvor Nelson “more true to the intrinsic possibilities of film than any but a few in the history of the medium.” Nelson's Natural Features (1990, 30 mins, Color, PFA Collection), preserved by PFA, is composed of a series of short pieces that layer and mingle stills of people, mementos, and text with footage of homey objects and lavish painting on glass. The Women's Film (40 mins, B&W, Courtesy Third World Collective) was made in 1971 by an all-female production collective of San Francisco Newsreel led by Louise Alaimo, Judy Smith, and Ellen Sorin. A striking example of the feminist documentary practices that emerged in the 1960s and seventies, this hard-hitting film mixes interviews with diverse women and montages drawn from contemporary media, building toward vérité footage of activism.