Bridget Riley, Photograph: Bridget Riley 25 May 1969 (Hand Signed by Bridget Riley), ca. 1987

Bridget Riley

Christo, Art Card: Christo and Jeanne-Claude on the Reichstag Roof (Hand Signed by Christo and Jeanne-Claude), 1993

Christo (Christo and Jeanne Claude)

Christo, Art Card: Reichstag Aerial View, Hand Signed by Christo and Jeanne-Claude, 1997

Christo (Christo and Jeanne Claude)

Art Card: The Umbrellas Japan-USA (Hand Signed by Christo and Jeanne-Claude), from the estate of Jacob Bal Teshuva, 1997

Cy Twombly

Cy Twombly, Art Card: Synopsis of a Battle, 1968 (Hand signed), 1984

Cy Twombly

Andy Warhol, Original acetate positive for Ladies & Gentlemen, ca. 1975 Acetate positive

Andy Warhol

Jasper Johns, Art Card: Target with Four Faces (Hand signed and inscribed by Jasper Johns)

Jasper Johns

Ellsworth Kelly, Handwritten, signed note on Whitney Museum card to CBS cameraman and collector Dan Pope

Ellsworth Kelly

Frank Stella, Luis Miguel Dominguin, from the Aluminum Series (Axsom, Schnitzer & Gemini), 1970

Frank Stella

Helen Siegl, Paradise, 1976

Helen Siegl

Christine McGinnis, Great Horned Owl, 1968

Christine McGinnis

Lowell Nesbitt, Blue Iris, 1980

Lowell Nesbitt

Marcel Dzama, Even More Friends of Jason, including Dzama, from the Estate of Jason Polan, double sided work with self portrait on the back, 2019

Marcel Dzama

Brice Marden, Vintage 1976 Stedelijk Museum Color Correction print (Hand signed by Brice Marden, from the private collection of Dan Pope, former CBS cameraman and collector), 1984

Brice Marden

Isamu Noguchi, Art Card: The Cry, 1957 (Hand Signed by Isamu Noguchi, and inscribed to CBS Cameraman), 1987

Isamu Noguchi

Thelma Appel, Untitled Connecticut town

Thelma Appel

Roy Lichtenstein, "I Know How You Made Me Feel, Brad!", VIP invitation to MoMA exhibition (Hand Signed by Roy Lichtenstein at the event), 1987

Roy Lichtenstein

Christo and Jeanne-Claude, Art Card: The Pont Neuf Wrapped (Hand Signed by Christo), 1985

Christo (Christo and Jeanne Claude)

Christo, Art Card: Wrapped Portrait of Jeanne-Claude, 1963 (Hand Signed), 1988

Christo (Christo and Jeanne Claude)

Roy Lichtenstein, VIP Invitation to Museum of Modern Art black tie preview of the exhibition "The Drawings of Roy Lichtenstein" (Hand Signed)

Roy Lichtenstein

James Rosenquist, Art Card: "Joan Crawford Says", 1964 (hand signed by James Rosenquist), ca. 1980

James Rosenquist

Christo and Jeanne-Claude: Art Card: Wrapped Magazines with Marilyn Monroe (Revues Empaquetees), 1962, (Hand Signed by Christo), 1991

Christo (Christo and Jeanne Claude)

David Hockney, City of London Barbican Center print (HAND SIGNED), 1982

David Hockney

Robert Indiana, RUYI, Figure 8, original drawing on the artist's blind stamped paper, 2002

Robert Indiana