Albright-Knox Art Gallery, 1964-1991 Select: Albright-Knox Art Gallery, 1964-1991 Aldrich Museum of Contemporary Art, 1971 Select: Aldrich Museum of Contemporary Art, 1971 Allen Memorial Art Museum, Oberlin College, 1971-1973 Select: Allen Memorial Art Museum, Oberlin College, 1971-1973 American Federation of Arts, 1956-1967 Select: American Federation of Arts, 1956-1967 Argus Gallery, 1962-1964 Select: Argus Gallery, 1962-1964 Art Association of Indianapolis, 1962-1966 Select: Art Association of Indianapolis, 1962-1966 Art Dealers Association, 1961-1984 Select: Art Dealers Association, 1961-1984 Art Institute of Chicago, 1955-1969 Select: Art Institute of Chicago, 1955-1969 Art Rental Gallery, Washington, D.C., 1957-1967 Select: Art Rental Gallery, Washington, D.C., 1957-1967 Art South, 1986-1987 Select: Art South, 1986-1987 Arte Centro, Milan, 1970-1973 Select: Arte Centro, Milan, 1970-1973 Artists' Choice Museum, 1978-1984 Select: Artists' Choice Museum, 1978-1984 Arts Club of Chicago, 1959-1965 Select: Arts Club of Chicago, 1959-1965 Axiom Gallery, London, 1964-1970 Select: Axiom Gallery, London, 1964-1970 Ball State University, 1959, 1971-1973 Select: Ball State University, 1959, 1971-1973 Baltimore Museum of Art, 1959-1967 Select: Baltimore Museum of Art, 1959-1967 Bayonne Jewish Community Center, 1963-1967 Select: Bayonne Jewish Community Center, 1963-1967 Bognar Gallery, 1965-1966 Select: Bognar Gallery, 1965-1966 Brookhaven Laboratory, 1963 Select: Brookhaven Laboratory, 1963 Brooklyn Museum, 1956-1963 Select: Brooklyn Museum, 1956-1963 Carnegie Institute, 1955-1967 Select: Carnegie Institute, 1955-1967 Chase Manhattan Bank, 1971-1989 Select: Chase Manhattan Bank, 1971-1989 Chemical Bank, 1985-1986 Select: Chemical Bank, 1985-1986 Christie's, 1984 Select: Christie's, 1984 Cincinnati Art Museum, 1962-1966 Select: Cincinnati Art Museum, 1962-1966 Collectors Gallery, 1965 Select: Collectors Gallery, 1965 Columbia Museum of Art, 1956-1963 Select: Columbia Museum of Art, 1956-1963 Columbus Gallery of Fine Arts, 1959-1960 Select: Columbus Gallery of Fine Arts, 1959-1960 Corcoran Gallery of Art, 1956-1967 Select: Corcoran Gallery of Art, 1956-1967 Dallas Museum for Contemporary Arts, 1958-1965 Select: Dallas Museum for Contemporary Arts, 1958-1965 David Mirvish Gallery, 1970-1973 Select: David Mirvish Gallery, 1970-1973 Dayton Art Institute, 1959-1964 Select: Dayton Art Institute, 1959-1964 Denver Art Museum, 1957-1963 Select: Denver Art Museum, 1957-1963 Devlin Gallery, 1962-1964 Select: Devlin Gallery, 1962-1964 Dord Fitz Gallery, 1960-1964 Select: Dord Fitz Gallery, 1960-1964 Dwan Gallery, 1960-1963 Select: Dwan Gallery, 1960-1963 Esther Bear Gallery, 1962-1966 Select: Esther Bear Gallery, 1962-1966 Fairleigh Dickinson University, 1959-1964 Select: Fairleigh Dickinson University, 1959-1964 Feigen / Feigen Palmer Gallery, 1964-1966 Select: Feigen / Feigen Palmer Gallery, 1964-1966 Felix Landau Gallery, 1962-1967 Select: Felix Landau Gallery, 1962-1967 Finch College Museum of Art, 1971-1972 Select: Finch College Museum of Art, 1971-1972 Franklin Siden Gallery, 1963-1966 Select: Franklin Siden Gallery, 1963-1966 Galeria Colibri, San Juan, 1969 Select: Galeria Colibri, San Juan, 1969 Galerie Darthea Speyer, 1970-1971 Select: Galerie Darthea Speyer, 1970-1971 Galleria La Bertesca, 1974-1975 Select: Galleria La Bertesca, 1974-1975 German Galleries, 1971-1972 Select: German Galleries, 1971-1972 Gertrude Kasle Gallery, 1965-1974 Select: Gertrude Kasle Gallery, 1965-1974 Gimpel Fils Gallery, 1961-1963 Select: Gimpel Fils Gallery, 1961-1963 Gres Gallery, 1959-1962 Select: Gres Gallery, 1959-1962 Guggenheim Museum, 1961-1987 Select: Guggenheim Museum, 1961-1987 Gump's Gallery, 1962-1966 Select: Gump's Gallery, 1962-1966 H.O. Gerngross and Co., 1972-1973 Select: H.O. Gerngross and Co., 1972-1973 Hamilton Galleries, 1966-1967 Select: Hamilton Galleries, 1966-1967 Hirshhorn Museum and Sculpture Garden, 1974-1984 Select: Hirshhorn Museum and Sculpture Garden, 1974-1984 Holland Gallery, 1960-1966 Select: Holland Gallery, 1960-1966 Houston Contemporary Arts Association, 1956-1962 Select: Houston Contemporary Arts Association, 1956-1962 Institute of Contemporary Art, Boston, 1959-1966 Select: Institute of Contemporary Art, Boston, 1959-1966 Instituto Torcuato di Tella, 1963 Select: Instituto Torcuato di Tella, 1963 Jack Glenn Gallery, 1971-1972 Select: Jack Glenn Gallery, 1971-1972 James L. Lodge Gallery, 1975-1986 Select: James L. Lodge Gallery, 1975-1986 Jefferson Place Gallery, 1959-1961 Select: Jefferson Place Gallery, 1959-1961 John Berggruen Gallery, 1972 Select: John Berggruen Gallery, 1972 Kansas City Art Institute, 1962 Select: Kansas City Art Institute, 1962 Katonah Gallery, 1962-1970 Select: Katonah Gallery, 1962-1970 Keene Bookshop and Gallery, 1958-1959 Select: Keene Bookshop and Gallery, 1958-1959 Knoedler, 1969-1970 Select: Knoedler, 1969-1970 Krannert Art Museum, 1960-1967 Select: Krannert Art Museum, 1960-1967 Lee Gallery, 1974-1975 Select: Lee Gallery, 1974-1975 Louisiana State University, 1964 Select: Louisiana State University, 1964 Manufacturers Hanover Corporation, 1967, 1986-1987 Select: Manufacturers Hanover Corporation, 1967, 1986-1987 Martha Jackson Gallery, 1960-1962 Select: Martha Jackson Gallery, 1960-1962 McCleaf Gallery of Philadelphia, 1969-1971 Select: McCleaf Gallery of Philadelphia, 1969-1971 McNay Art Institute, 1972-1976 Select: McNay Art Institute, 1972-1976 Meredith Long Gallery, 1974-1977 Select: Meredith Long Gallery, 1974-1977 Metropolitan Museum of Art, 1955-1962 Select: Metropolitan Museum of Art, 1955-1962 Minneapolis Institute of Arts, 1957-1963 Select: Minneapolis Institute of Arts, 1957-1963 Moore College of Art, 1971 Select: Moore College of Art, 1971 Museum of Fine Arts, Houston, 1971-1985 Select: Museum of Fine Arts, Houston, 1971-1985 Museum of Modern Art, 1954-1991 Select: Museum of Modern Art, 1954-1991 Museum of Modern Art Lending Services, Consignment Sheets, 1953-1966 Select: Museum of Modern Art Lending Services, Consignment Sheets, 1953-1966 Museum of Modern Art Lending Services, Sales Confirmations, 1956-1966 Select: Museum of Modern Art Lending Services, Sales Confirmations, 1956-1966 National Association of Fine Arts Dealers, 1962 Select: National Association of Fine Arts Dealers, 1962 National Collection of Fine Arts, 1966 Select: National Collection of Fine Arts, 1966 National Institute of Arts and Letters, 1956-1966 Select: National Institute of Arts and Letters, 1956-1966 New Museum of Contemporary Art, 1983-1987 Select: New Museum of Contemporary Art, 1983-1987 New School of Art Center, 1955-1965 Select: New School of Art Center, 1955-1965 New Vision Centre Gallery, 1964-1968 Select: New Vision Centre Gallery, 1964-1968 New York Cultural Center, 1967-1973 Select: New York Cultural Center, 1967-1973 New York University, 1959-1967 Select: New York University, 1959-1967 Newberry Farms Gallery, 1976 Select: Newberry Farms Gallery, 1976 Newport Jazz Festival, 1958 Select: Newport Jazz Festival, 1958 Nicholas Wilder Gallery, 1966-1976 Select: Nicholas Wilder Gallery, 1966-1976 North Carolina Museum of Art, 1957-1959 Select: North Carolina Museum of Art, 1957-1959 Nova Gallery, 1961-1964 Select: Nova Gallery, 1961-1964 Obelisk Gallery, 1970-1971 Select: Obelisk Gallery, 1970-1971 Olympia Gallery, 1975-1976 Select: Olympia Gallery, 1975-1976 Owens-Corning Fiberglass Corporation, 1972-1979 Select: Owens-Corning Fiberglass Corporation, 1972-1979 Parrish Art Museum, 1965 Select: Parrish Art Museum, 1965 Pasadena Art Museum, 1972 Select: Pasadena Art Museum, 1972 Paul Facchetti Gallery, 1961-1964 Select: Paul Facchetti Gallery, 1961-1964 Philadelphia Museum of Art, 1960-1973 Select: Philadelphia Museum of Art, 1960-1973 Philbrook Art Center, 1964-1967 Select: Philbrook Art Center, 1964-1967 Prentice Hall Publishing Company, 1963-1964 Select: Prentice Hall Publishing Company, 1963-1964 Purdue University, 1964-1966 Select: Purdue University, 1964-1966 Quay Gallery, 1970-1971 Select: Quay Gallery, 1970-1971 Reed College, 1965-1967 Select: Reed College, 1965-1967 Richard Gray Gallery, 1967-1968 Select: Richard Gray Gallery, 1967-1968 Rose Art Museum, 1958-1966 Select: Rose Art Museum, 1958-1966 Ruth S. Schaffner Gallery, 1974 Select: Ruth S. Schaffner Gallery, 1974 San Francisco Museum of Art, 1963-1966 Select: San Francisco Museum of Art, 1963-1966 Simonne Stern Gallery, 1970-1971 Select: Simonne Stern Gallery, 1970-1971 Southern Illinois University, 1964 Select: Southern Illinois University, 1964 State University College, New York, 1955-1964 Select: State University College, New York, 1955-1964 Storm King Art Center, 1972-1986 Select: Storm King Art Center, 1972-1986 Swearingen-Byck Gallery, 1971-1973 Select: Swearingen-Byck Gallery, 1971-1973 Syracuse University, 1962-1981 Select: Syracuse University, 1962-1981 Union College, 1962-1964 Select: Union College, 1962-1964 United States Information Agency, 1961-1965 Select: United States Information Agency, 1961-1965 University of Colorado, 1958-1963 Select: University of Colorado, 1958-1963 University of Illinois, 1956-1965 Select: University of Illinois, 1956-1965 University of Kentucky, 1958-1960 Select: University of Kentucky, 1958-1960 University of Minnesota, 1955-1967 Select: University of Minnesota, 1955-1967 University of Nebraska, 1956-1964, 1988 Select: University of Nebraska, 1956-1964, 1988 University of New Mexico, 1963-1965 Select: University of New Mexico, 1963-1965 University of Notre Dame, 1963-1967 Select: University of Notre Dame, 1963-1967 University of Texas, 1971-1976 Select: University of Texas, 1971-1976 Vassar College, 1954-1964 Select: Vassar College, 1954-1964 Virginia Museum of Fine Arts, 1958-1966, 1989-1990 Select: Virginia Museum of Fine Arts, 1958-1966, 1989-1990 Wadsworth Atheneum, 1959-1965 Select: Wadsworth Atheneum, 1959-1965 Walker Art Center, 1955-1963 Select: Walker Art Center, 1955-1963 Washington Gallery of Modern Art, 1962-1967 Select: Washington Gallery of Modern Art, 1962-1967 Washington University, 1959-1960 Select: Washington University, 1959-1960 Watson Gallery, 1987 Select: Watson Gallery, 1987 Weatherspoon Art Gallery, 1970-1991 Select: Weatherspoon Art Gallery, 1970-1991 West Publishing Company Collection, 1987-1990 Select: West Publishing Company Collection, 1987-1990 Westmoreland County Museum of Art, 1966-1970 Select: Westmoreland County Museum of Art, 1966-1970 Whitney Museum of American Art, 1955-1967 Select: Whitney Museum of American Art, 1955-1967 Whitney Museum of American Art, Fairfield County, 1983-1984 Select: Whitney Museum of American Art, Fairfield County, 1983-1984 Woodward Foundation, 1963-1971 Select: Woodward Foundation, 1963-1971 Worcester Art Museum, 1965-1973 Select: Worcester Art Museum, 1965-1973 Yale University, 1959-1967 Select: Yale University, 1959-1967