"Interviews." . . . . . . . . . . . . "Most of the photographs in this collection were taken during the filming of the video I Live for Art, about Puccini's Tosca, for which the 15 foremost Toscas of the 20th century were interviewed by Robert Merrill and additional footage about Maria Callas was added. The collection also contains exhibition announcements, invitations, catalogs, and press material (domestic and international) relating to Horton's photographs." . "Rick Horton photographs" . "Photographic prints" . . . "Portrait photographs" . . . . . . "Contact sheets" . . . . . . . . "Photograph albums" . . . . . . "Film negatives" . . "Silver gelatin prints" . . . . . . "Slides" . . "Group portraits" . . . .