Mathematical Forms." In 1971 Ruth Vollmer participated in the protest of the cancellation of the Hans Haacke at The Solomon R. Guggenheim exhibition by writing a letter to the director, Thomas Messer. In 1976, she had a large one-person exhibition at the Neuberger Museum of Art. Vollmer hosted artists such as Robert Smithson, Donald Judd, Sol LeWitt, Carl André, and Eva Hesse. In 1982, Ruth Vollmer died after a long battle with Alzheimer's. A majority of her personal art collection of over one hundred sculptures, paintings, and drawings was donated to MoMA. Her personal art collection included works by Carl Andre, Mel Bochner, Eva Hesse, Sol LeWitt, Ad Reinhardt, Frank Stella, Agnes Martin, and Chryssa. Exhibitions 1977, Group Exhibition, Betty Parsons Gallery. Mino Argento, Calvert Coggeshall, Minoru Kawabata, Richard Tuttle, Ruth Vollmer, Robert Yasuda, Helene Aylon and Cleve Gray (among others). 1978, Group Exhibition, Betty Parsons Gallery. Ruth Vollmer, Mino Argento, Cleve Gray, Calvert Coggeshall (among others) 1979–80, Group Exhibition, Betty Parsons Gallery. Mino Argento, Fanny Brennan, Richard Francisco, Richard Tuttle, Ruth Vollmer and Toko Shinoda (among others) References External links Ruth Vollmer frequently exhibited at the Betty Parsons Gallery on West 57th Street Ruth Landshoff Vollmer fine art prices, auction results, auction images "Ruth Vollmer & Gego Thinking the Line" "Vollmer began designing window displays for Tiffany". The New York Times Archives of American Art page (papers and images) for Ruth Vollmer Getty Union List of Artist Names for Vollmer German artists 1903 births 1982 deaths 20th-century American painters Artists from Munich Painters from New York City German emigrants to the United States