Encore Artists Entered from New York Times concert listing and review ("Opera and Concert Programs," Dec. 12, 1954, pg. X8; "Six Players Excel at Encore Concert," Dec. 18, 1954, pg. 13), and from calendar in 12/5/1954 MH program. WORLD PREMIERE of John Lessard's PARTITA chamber music performance 1954-12-17T20:30:00