Seventy-five members of Congress, including all the congressmen from the Washington, D.C., suburbs, yesterday sent a letter urging baseball Commissioner Peter Ueberroth to tell major league owners that there is strong congressional support for the return of the sport to the Nation's Capital.

"There are a great many of us in Congress who believe that America's game should be in America's capital city," said Rep. Frank Wolf (R-Va.), who signed the letter with Reps. Stan Parris (R-Va.), Mike Barnes (D-Md.), and Steny Hoyer (D-Md.), and Del. Walter Fauntroy (D-D.C.).

Another 70 members of Congress representing 29 states also signed.

The congressional letter came before a week-long series of events, sponsored by the D.C. Baseball Commission, in support of returning a team to Washington. The city has been without a baseball franchise since the Senators left in 1971.

The week's activities will include distribution of buttons and bumper stickers bearing the slogan "Baseball in '87," plus a baseball handoff Monday during which youth teams will line the city streets between the District Building and RFK Stadium and pass a baseball along.

The first ball will be thrown out by David A. Clarke, D.C. City Council chairman, and the last person to receive the ball will be Mayor Marion Barry.