IT'S BEEN a good year for Washington theater. Let's shake out the files and see what's left of 1987:

Monday's seventh annual Holiday Performance harvested four tons of non-perishable food for the area's needy. The League of Washington Theaters sponsored the event at Arena's Kreeger Theater . . . The Ford Motor Company has made a grant of $350,000 to inaugurate Arena's new Stage Four series -- it's the largest corporate grant in Arena's 37-year history. Next in the new play series, which began with an adaptation of Harvey Pekar's "American Splendor" comic books, is "The Rivers and Ravines" by Washington playwright Heather McDonald, about the impact of the farm crisis on people in eastern Colorado . . . Source Theater on Sunday gave out its annual Source Awards. Actor Kryztov Lindquist took top prize for his role in "A Prayer for My Daughter" (which is said to be under consideration as a feature film); Robert McNamara was named best director for "Daughter"; Ritchie Porter won the Off the Wall Award for his part in perpetrating "Titus Andronicus."

Horizons Theater promises actual cushions on the seats when it opens Marisha Chamberlain's "Scheherazade" January 28. Carol Myers and Bill Whittaker star in the drama about rape. And the Georgetown troupe's smash hit "A . . . My Name Is Alice," which extended for eight weeks (beyond the scheduled four), will return in June (Horizons promises air conditioning by then) . . . "Only in America" was the original title of the American Music Theater musical revue arriving at the Kennedy Center this Saturday. But it's recently been changed to "Let Freedom Sing" -- a 1959 play by Jerome Lawrence and Robert E. Lee already had dibs on the name . . . If you're looking for the Back Alley Theater, which is currently presenting "Bumps," actress Caron Tate's first play, it's at 1365 Kennedy Street NW, lower level. Call 291-2862 . . . Arena's "Light Up the Sky" just squeaked in under the wire as the last show eligible for consideration for the fourth annual Helen Hayes Awards. This is the first year the awards, which are May 9 at the National Theatre, have been pegged to the calendar year.

"Mama I Want To Sing," Vy Higgensen's gospel musical about her sister, pop singer Doris "Just One Look" Troy, returns again to the Warner Theater this weekend. This makes five D.C. visits for the show, which some have called "Mama I Want To Scream" . . . Toby's Dinner Theater is opening its production of Rupert Hines' Tony-winning musical "The Mystery of Edwin Drood" on January 7. The Kennedy Center is also thinking about booking a touring production of the mystery musical, which ends with the audience voting on whodunnit . . . How's this for a cast: Linda Hunt, Annie Lennox (of Eurythmics), Julian Sands and Donald Pleasance. They star in Robert Altman's adaptation of Harold Pinter's 1957 one-act "The Room" 10 p.m. Saturday on Channel 7 . . . Merry Christmas and a Happy New Year!