Photographer unknown Control Booth during Unitel Filming Late 1970s Photographer unknown Philadelphia Orchestra during Unitel Filming late 1970s Photographer Unknown Eugene Ormandy Conducting during Unitel Filming late 1970s Klaus Hallig Typed letter, to Eugene Ormandy 30 March 1977 Klaus Hallig Typed letter, to Eugene Ormandy 19 April 1977 Eugene Ormandy's Datebook for June 1977 The dates for the 1977 Unitel filming were June 24th and 25th
