Abadie, Daniel, circa 1985-2000 Select: Abadie, Daniel, circa 1985-2000 Abrams, Harry N., 1986-2001 Select: Abrams, Harry N., 1986-2001 Ahlers, Jans A., 1995-1998 Select: Ahlers, Jans A., 1995-1998 Americas Society, 1989-1997 Select: Americas Society, 1989-1997 Austin, Sally, 1996-2000 Select: Austin, Sally, 1996-2000 A, General, circa 1974-2000 Select: A, General, circa 1974-2000Scope and ContentsIncludes correspondence with Edward Albee, Josef Albers, Agam, L. Alcopley, Lawrence Alloway, Carl Andre, and Karel Appel Bacon, Francis, 1970-1984 Select: Bacon, Francis, 1970-1984 Barnes, Harry B., 1976-1983 Select: Barnes, Harry B., 1976-1983 Barnet, Will, 1978-1999 Select: Barnet, Will, 1978-1999 Barnett, Vivian, 1987-1994 Select: Barnett, Vivian, 1987-1994 Barnreuther, Andrea, 1992-1994 Select: Barnreuther, Andrea, 1992-1994 Bissier, Lisbeth, 1968-1988 Select: Bissier, Lisbeth, 1968-1988 Bell, Larry, 1977-1995 Select: Bell, Larry, 1977-1995 Bellagio Art Gallery, 2000 Select: Bellagio Art Gallery, 2000 Beuys, Joseph, 1985-1995 Select: Beuys, Joseph, 1985-1995 Bloss, Joaquim (Goethe Institute), 1991-1992 Select: Bloss, Joaquim (Goethe Institute), 1991-1992 Borges, Jacobo, 1986-1996 Select: Borges, Jacobo, 1986-1996 Boston University, 1996-1997 Select: Boston University, 1996-1997 Brown, J. Carter, 1972-1988 Select: Brown, J. Carter, 1972-1988 Burri, Alberto and Minsa, 1978-1988 Select: Burri, Alberto and Minsa, 1978-1988 Bury, Pol, 1978-1994 Select: Bury, Pol, 1978-1994 Bussman, Haus Munster, 1992-1996 Select: Bussman, Haus Munster, 1992-1996 Byars, James Lee, 1980-1988 Select: Byars, James Lee, 1980-1988 B, General, circa 1970-2000 Select: B, General, circa 1970-2000 Caixa Foundation, circa 1990-2000 Select: Caixa Foundation, circa 1990-2000 Castillo, Jorge and Foundation, 1987-1993 Select: Castillo, Jorge and Foundation, 1987-1993 Chagall, Marc, 1967-1980 Select: Chagall, Marc, 1967-1980 Chalupecký, Jindrich, 1974-1988 Select: Chalupecký, Jindrich, 1974-1988 Chillida, Eduardo, 1987-2000 Select: Chillida, Eduardo, 1987-2000 Chryssa, 1974-1997 Select: Chryssa, 1974-1997 Cohen, Rudolph, 1982-1997 Select: Cohen, Rudolph, 1982-1997 Colin, Ralph F. (Art Dealers Association of America), 1979-1984 Select: Colin, Ralph F. (Art Dealers Association of America), 1979-1984 Collado, Lisa, 1981-1986 Select: Collado, Lisa, 1981-1986 Comini, Alessandra, 1977-1989 Select: Comini, Alessandra, 1977-1989 Coolidge, John, 1984-1991 Select: Coolidge, John, 1984-1991 Cooper, Douglas, circa 1981-1982 Select: Cooper, Douglas, circa 1981-1982 Cunningham, Priscilla and Charles, 1977-1997 Select: Cunningham, Priscilla and Charles, 1977-1997 Czech Republic, circa 1988-1995 Select: Czech Republic, circa 1988-1995 Czerny, Ilonka, 1992-1996 Select: Czerny, Ilonka, 1992-1996 C, General, circa 1970-2000 Select: C, General, circa 1970-2000Scope and ContentsIncludes correspondence with Leo Castelli, Judy Chicago, Christo, and Joseph Cornell Davis, Douglas, 1976-1988 Select: Davis, Douglas, 1976-1988 de Duve, Thierry, 1998-1999 Select: de Duve, Thierry, 1998-1999 de Staël, François, 1983-1995 Select: de Staël, François, 1983-1995 Dinnerstein, Simon, circa 1978-2000 Select: Dinnerstein, Simon, circa 1978-2000 Dogançay, Burhan, 1997 Select: Dogançay, Burhan, 1997 Dubuffet, Jean and Foundation, 1976-2001 Select: Dubuffet, Jean and Foundation, 1976-2001 Dörflinger, Hans, 1977-1999 Select: Dörflinger, Hans, 1977-1999 D, General, circa 1970-2000 Select: D, General, circa 1970-2000Scope and ContentsIncludes correspondence with Sonia Delaunay, Walter de Maria, and Jim Dine Edwards, Sibyl, 1977-1981 Select: Edwards, Sibyl, 1977-1981 Ernst, Max and Family, 1974-1985 Select: Ernst, Max and Family, 1974-1985 Europe After the Flood, 1994-1995 Select: Europe After the Flood, 1994-1995 Exhibitions at Guggenheim Museum, circa 1970-1975 Select: Exhibitions at Guggenheim Museum, circa 1970-1975 Expo Vienna, 1991 Select: Expo Vienna, 1991 E, General, circa 1970-2001 Select: E, General, circa 1970-2001 Finn, David, 1979-1996 Select: Finn, David, 1979-1996 Flavin, Dan, 1971-1982 Select: Flavin, Dan, 1971-1982 Flinker, Karl, 1979-1986 Select: Flinker, Karl, 1979-1986 Fontana, Lucio Fondazione, 1975-1999 Select: Fontana, Lucio Fondazione, 1975-1999 Frank, David, 1996-1997 Select: Frank, David, 1996-1997 Frankenthaler, Helen, 1975-1987 Select: Frankenthaler, Helen, 1975-1987 Franta, 1977-1986 Select: Franta, 1977-1986 Freudenheim, Thomas, 1980-1995 Select: Freudenheim, Thomas, 1980-1995 F, General, circa 1967-2000 Select: F, General, circa 1967-2000 Gabo, Naum and Miriam, 1975-1981 Select: Gabo, Naum and Miriam, 1975-1981 Getlein, Frank, 1987 Select: Getlein, Frank, 1987 Giacometti, Alberto and Family, 1964-1998 Select: Giacometti, Alberto and Family, 1964-1998 Goethe University, 1994-2000 Select: Goethe University, 1994-2000 Grohmann, Will, 1962-1967 Select: Grohmann, Will, 1962-1967 Guggenheim Family, circa 1965-2000 Select: Guggenheim Family, circa 1965-2000 Guggenheim Museum, circa 1987-1999 Select: Guggenheim Museum, circa 1987-1999 G, General, circa 1970-2000 Select: G, General, circa 1970-2000Scope and ContentsIncludes correspondence with Isa Genzken and Philip Guston Haftmann, Werner, 1977-1985 Select: Haftmann, Werner, 1977-1985 Hahl, Jelena, 1979-1995 Select: Hahl, Jelena, 1979-1995 Hamilton, Richard, 1974-1986 Select: Hamilton, Richard, 1974-1986 Hammacher-van den Brande, Renilde, 1980-1985 Select: Hammacher-van den Brande, Renilde, 1980-1985 Hartmann, Pia, 1992-1994 Select: Hartmann, Pia, 1992-1994 Hayes, David, 1979-1986 Select: Hayes, David, 1979-1986 Hélion, Jean, 1967-1987 Select: Hélion, Jean, 1967-1987 Hinterreiter Foundation, 1991-1995 Select: Hinterreiter Foundation, 1991-1995 Horgan, Paul, 1973-1987 Select: Horgan, Paul, 1973-1987 Horine, E. Field, 1976-1999 Select: Horine, E. Field, 1976-1999 H, General, circa 1970-2000 Select: H, General, circa 1970-2000 Independent Committee on Arts Policy (ICAP), 1991-1993 Select: Independent Committee on Arts Policy (ICAP), 1991-1993 Institute of Contemporary Art (ICA) Boston, 1995-1997 Select: Institute of Contemporary Art (ICA) Boston, 1995-1997 Institute of International Education (IIE), 1992-1999 Select: Institute of International Education (IIE), 1992-1999 I, General, circa 1970-1999 Select: I, General, circa 1970-1999 Jensen, Alfred J., 1991-1996 Select: Jensen, Alfred J., 1991-1996 Jensen, Knud W., 1996-1997 Select: Jensen, Knud W., 1996-1997 J, General, circa 1970-1999 Select: J, General, circa 1970-1999 Kandinsky (Wassily) Book, 1992-1996 Select: Kandinsky (Wassily) Book, 1992-1996 Karavan, Dani, 1978-1993 Select: Karavan, Dani, 1978-1993 Kiyokawa, Taiji, 1984-1987 Select: Kiyokawa, Taiji, 1984-1987 Klee, Felix, 1967-1974 Select: Klee, Felix, 1967-1974 Klüser, Bernd, 1989 Select: Klüser, Bernd, 1989 Knowlton, Grace, 1974-1986 Select: Knowlton, Grace, 1974-1986 Koczy, Rosemarie, circa 1979-1995 Select: Koczy, Rosemarie, circa 1979-1995 Kokoschka, Olda, 1976-1987 Select: Kokoschka, Olda, 1976-1987 Kolár, Jirí , 1979-1996 Select: Kolár, Jirí , 1979-1996 Kolibal, Stanislav, 1972-1997 Select: Kolibal, Stanislav, 1972-1997 Koska, Elke, 1983-1987 Select: Koska, Elke, 1983-1987 Kotalík, Jirí , 1992-1996 Select: Kotalík, Jirí , 1992-1996 Kraft, Ann, 1982-1994 Select: Kraft, Ann, 1982-1994 Kuh, Katharine, circa 1974-1994 Select: Kuh, Katharine, circa 1974-1994 Kunst und Ausstellungshalle der Bundesrepublik Deutschland, 1994-1996 Select: Kunst und Ausstellungshalle der Bundesrepublik Deutschland, 1994-1996 K, General, circa 1970-1999 Select: K, General, circa 1970-1999Scope and ContentsIncludes correspondence with Alex Katz, R.B. Kitaj, and Lee Krasner Lam, Wilfredo and Lou-Laurin, 1981-1993 Select: Lam, Wilfredo and Lou-Laurin, 1981-1993 Lawsen-Johnston, Peter, 1969-1999 Select: Lawsen-Johnston, Peter, 1969-1999 le Brocquy, Louis, 1978-2001 Select: le Brocquy, Louis, 1978-2001 Lehner, Andreas, 2009-2010 Select: Lehner, Andreas, 2009-2010 Licht, Fred, 1975-2000 Select: Licht, Fred, 1975-2000 Lipchitz, Yulla, 1976-1987 Select: Lipchitz, Yulla, 1976-1987 Loreau, Max, 1970-1993 Select: Loreau, Max, 1970-1993 Lowe Museum, University of Miami, 1990-1991 Select: Lowe Museum, University of Miami, 1990-1991 L, General, circa 1970-2000 Select: L, General, circa 1970-2000 Macku, Zdenek, 1994-1997 Select: Macku, Zdenek, 1994-1997 Madlener, Jörg, 1987-1988 Select: Madlener, Jörg, 1987-1988 Martin, Agnes, 1975-1985 Select: Martin, Agnes, 1975-1985 Martini, Raffaele, 1980-1986 Select: Martini, Raffaele, 1980-1986 Maxero, O., 1981-1995 Select: Maxero, O., 1981-1995 McKinley, Hazel G., 1981-1988 Select: McKinley, Hazel G., 1981-1988 Miyawaki, Aiko, 1979-1984 Select: Miyawaki, Aiko, 1979-1984 Mlynárcik, Alex , 1969-1996 Select: Mlynárcik, Alex , 1969-1996 Moore, Henry, 1965-1982 Select: Moore, Henry, 1965-1982 Museum Moderner Kunst Stiflung, 1994 Select: Museum Moderner Kunst Stiflung, 1994 M, General, circa 1970-2000 Select: M, General, circa 1970-2000Scope and ContentsIncludes correspondence with René Magritte, Georges Mathieu, Joan Miro, and Robert Motherwell Nakamura, Nobuo, 1991-2000 Select: Nakamura, Nobuo, 1991-2000 National Gallery in Prague (Národní galerie v Praze), circa 1993-2001 Select: National Gallery in Prague (Národní galerie v Praze), circa 1993-2001 Navin, Richard, circa 1977 Select: Navin, Richard, circa 1977 Noguchi, Isamu and Museum, 1967-2001 Select: Noguchi, Isamu and Museum, 1967-2001 Nordstern, circa 1990-2000 Select: Nordstern, circa 1990-2000 Nori, Franziska, 1995-1998 Select: Nori, Franziska, 1995-1998 Norton, Ann, 1978-1980 Select: Norton, Ann, 1978-1980 N, General, circa 1970-2000 Select: N, General, circa 1970-2000Scope and ContentsIncludes correspondence with Kenneth Noland Oakes, John, 1978-1993 Select: Oakes, John, 1978-1993 O, General, circa 1970-1999 Select: O, General, circa 1970-1999Scope and ContentsIncludes correspondence with Georgia O'Keeffe and Alfonso Ossorio Pacher, William, 1976-1977 Select: Pacher, William, 1976-1977 Palazzio Grassi, 1991-1997 Select: Palazzio Grassi, 1991-1997 Pei, I.M. , 1976-1991 Select: Pei, I.M. , 1976-1991 Picabia, Gabrielle Buffet and Family, 1969-1978 Select: Picabia, Gabrielle Buffet and Family, 1969-1978 P, General, circa 1970-2000 Select: P, General, circa 1970-2000Scope and ContentsIncludes correspondence with Richard Pousette-Dart Raab, Josefine, 1993-2000 Select: Raab, Josefine, 1993-2000 Richards, I.A. and Dorothea, 1967-1979 Select: Richards, I.A. and Dorothea, 1967-1979 Rickey, George, 1980-1988 Select: Rickey, George, 1980-1988 Rockefeller, David, 1988-2000 Select: Rockefeller, David, 1988-2000 Roethel, Hans Konrad, 1975-1978 Select: Roethel, Hans Konrad, 1975-1978 Rothschild, Judith and Foundation, 1997-1997 Select: Rothschild, Judith and Foundation, 1997-1997 Rowell, Margit, 1975-1996 Select: Rowell, Margit, 1975-1996 Russell, John, 1971-1994 Select: Russell, John, 1971-1994 R, General, circa 1970-2000 Select: R, General, circa 1970-2000Scope and ContentsIncludes correspondence with Gerhard Richter and Paul Rotterdam Schirn Kunsthalle, circa 1990-2000 Select: Schirn Kunsthalle, circa 1990-2000 Schmalenbach, Werner, 1971-1994 Select: Schmalenbach, Werner, 1971-1994 Schöffer, Nicholas, 1971-1983 Select: Schöffer, Nicholas, 1971-1983 Segnini, Cesar, 1992-1996 Select: Segnini, Cesar, 1992-1996 Seliger, Charles, 1984-1997 Select: Seliger, Charles, 1984-1997 Serrano, Pablo, 1974-1985 Select: Serrano, Pablo, 1974-1985 Setlík, Jirí , 1974-1997 Select: Setlík, Jirí , 1974-1997 Simonds, Charles and Bella, 1986-1992 Select: Simonds, Charles and Bella, 1986-1992 Slive, Seymour, 1974-1995 Select: Slive, Seymour, 1974-1995 Societe Kandinsky, 1991-2000 Select: Societe Kandinsky, 1991-2000 Sovak, Pravoslav, 1979-1995 Select: Sovak, Pravoslav, 1979-1995 Soto, Jesus, 1977-1984 Select: Soto, Jesus, 1977-1984 Stanislawski, Ryszard, 2000-2001, 1976 Select: Stanislawski, Ryszard, 2000-2001, 1976 Still, Clyfford, 1972-1974 Select: Still, Clyfford, 1972-1974 Sujo, Clara Diament, 1977-1994 Select: Sujo, Clara Diament, 1977-1994 S, General, circa 1970-2000 Select: S, General, circa 1970-2000Scope and ContentsIncludes correspondence with Meyer Schapiro Tàpies, Antonio and Foundation, 1978-1995 Select: Tàpies, Antonio and Foundation, 1978-1995 Tasende, José, 1987-1993 Select: Tasende, José, 1987-1993 Tigermann, Eric, 1996-1999 Select: Tigermann, Eric, 1996-1999 Tovish, Harold, 1974-1995 Select: Tovish, Harold, 1974-1995 Tworkov, Jack, 1974-1982 Select: Tworkov, Jack, 1974-1982 T, General, circa 1970-1998 Select: T, General, circa 1970-1998Scope and ContentsIncludes correspondence with James Turrell U, General, 1975-1991 Select: U, General, 1975-1991 van der Roe, Georgia, 1976-1984 Select: van der Roe, Georgia, 1976-1984 Varia, Radu, 1977-1988 Select: Varia, Radu, 1977-1988 Vasarely, Victor, 1972-1984 Select: Vasarely, Victor, 1972-1984 V, General, circa 1970-2000 Select: V, General, circa 1970-2000 Werner, Klaus, 1992 Select: Werner, Klaus, 1992 Williams, Betty, 1981-1987 Select: Williams, Betty, 1981-1987 Wolfe, Jack, 1981-1983 Select: Wolfe, Jack, 1981-1983 W, General, circa 1973-2000 Select: W, General, circa 1973-2000 Young, Mahonri, 1986-1997 Select: Young, Mahonri, 1986-1997 Y, General, circa 1970-1990 Select: Y, General, circa 1970-1990Scope and ContentsIncludes correspondence with Jack Youngerman and Adja Yunkers Zweite, Armin, 1976-1999 Select: Zweite, Armin, 1976-1999 Z, General, circa 1970-2001 Select: Z, General, circa 1970-2001