Radio and television programs featuring Toscanini and Horowitz, Louis Armstrong and Liza Minnelli, Garrison Keillor and Shirley MacLaine, among many others, have originated from Carnegie Hall.

Now through Aug. 31, in honor of the hall's 100th birthday this year, the Museum of Broadcasting is offering "On Stage at Carnegie Hall: A Centennial Celebration." This is an exhibition of screenings of more than 50 hours of programs broadcast from the hall.The selections span several decades, up to present times - the earliest is a 1935 radio show with Ethel Merman, Ray Bolger and Bert Lahr. The selections are all drawn from the museum's permanent collection, and include acquisitions sought specifically for this series.

Screenings are Tuesdays-Saturdays at 2.30 p.m., and Tuesday evenings at 5.30 p.m. The museum is open Wednesdays through Saturdays from noon to 5.30 p.m., and Tuesdays from noon to 8.00 p.m., closed Sundays and Mondays.