Intrigued by all those comparisons you've heard people make between Carol Burnett and Sarah Jessica Parker playing the Princess in Once Upon A Mattress? Well, now you can make your own comparisons.

This week, Jan. 21-25, the Museum of Television & Radio on West 52nd St. in Manhattan will screen the 1964, black-and-white TV production of Mattress, featuring Burnett, Joe Bova, Jack Gilford, Jane White (all original Broadway cast-members), Elliott Gould and Shani Wallis (as Larkin). The Museum is screening the program daily at 1:30 and 4:15 PM through Feb. 1

Also on tap through Feb. 1 will be a daily screening, in the Goodson Theatre, to honor composer, Burton Lane, who died Jan. 5. The 1966 "Bell Telephone Hour: The Lyrics of Alan Jay Lerner" features Cyril Ritchard, Florence Henderson, Stanley Holloway, Edward Villella and Patricia McBride. The script, which takes an analytical approach to Lerner's romanticism, was written by Lucille Kallen -- the only female writer on "Your Show Of Shows." (Characters in both My Favorite Year and Laughter On The 23rd Floor were based on her.) The Bell Hour features Barbara Harris and John Cullum (in a pompadour!) performing several numbers from Lane's On A Clear Day, including "Hurry, It's Lovely Up Here," "Bernard S. Cohen," "Melinda," "Come Back to Me" and the title song. The program is being screened Tuesday through Friday at 3 PM, Sat, Jan. 25 at 2:45 PM.

The Museum is also showing Lady In The Dark, the 1954 Max Liebman production of the Moss Hart/Kurt Weill/Ira Gershwin musical, starring Ann Sothern, James Daly and Carlton Carpenter. Times are Jan. 23-24 at 3:15 PM and January 25 at 1:15 PM.

Oh, and Evita fans might want to check out an acclaimed 1973 British documentary about Eva Peron, "Queen Of Hearts," shown daily beginning Tuesday, Jan. 21 (times vary). Jane Klain, senior editor of the museum's database, confirms that all of the above programs can be viewed at private consoles at the Museum as well. The Museum is open Tuesday to Sunday, Noon to 6 PM, with later hours on Thursday for console viewing. Admission is a suggested $6 contribution. (California residents should note that the Beverly Hills branch of the museum has all the above tapes available for console screenings.) For more information, call (212)621-6600.

--By David Lefkowitz