Since 2008, he has served as the Fluxus Consulting Curator of the Gilbert and Lila Silverman Collection at the Museum of Modern Art (MoMA).
[2] In the mid-1960s, he was the director of the basement gallery at Judson Memorial Church in Greenwich Village, where he also performed and took part in happenings.
[5][6][7][8][9] In November 1970, he joined Toche and fellow artist Faith Ringgold in an exhibition at the Judson Church called the People's Flag Show, which resulted in a police raid and the artists' arrest for flag desecration.
[10][11] In 1981, Hendricks was enlisted by Gilbert and Lila Silverman to curate their collection of Fluxus documentation.
[1][2] In addition, he is a friend and artistic collaborator of Yoko Ono, serving as her curator and archivist since the late 1980s.