REOPENED: Starting Saturday morning, New York’s proud Empire State Building will once again allow members of the public on to its 86th floor observation deck. The landmark, which is now the tallest structure in the city, had closed the landing immediately after the Sept. 11 attack on its neighbor to the south, the World Trade Center. The Empire State has also bathed its spire in red, white and blue lights at night. Heavy security measures are in effect at the building . . . OFFERED: The Georgetown mansion of The Washington Post’s late publisher, Katharine Graham, is on the market for $8.35 million, that paper reports. She had lived on the 1.24-acre property since 1947 and called the residence a “lovable house with character. Graham died July 17 at the age of 84 . . . MARKED DOWN: Rap entrepreneur Sean "P. Diddy" Combs’s 12-story Park Avenue building in New York, an investment property with rental apartments, has had its asking price slashed, from $17.5 million to $16 million, reports the Wall Street Journal, which notes that a hesitant climate in the current real-estate market could keep the “For Sale” sign on the door for a while yet . . . SCHEDULED: ABC TV will mark the 50th anniversary of the granddaddy of pop-music programs, “American Bandstand,” this spring, the network has announced. Perennial teenager Dick Clark, who hosted the show until its cancellation in 1989, said about the age of the show, “Time marches on, doesn’t it?” Clark is now 71 . . . DIED: Franklin H. Mills, 65, the father of R.E.M bassist Mike Mills and a singer in his own right, passed away Tuesday. Mills was a Marine pilot and later worked in construction. He performed with the Naval Aviation Choir and in a quartet at the Miss America and Miss Universe pageants. He also sang with the Atlanta (Ga.) Choral Guild . . . SUED: New York publicist Lizzie Grubman, who on Sept. 12 was indicted on 26 counts over a S.U.V. crash in the Hamptons last summer that injured 16 people, this week was slapped with her ninth multi-million lawsuit stemming from the July 7 incident. Current claims against her total $156 million. Grubman was indicted on charges of assault, drunken driving and leaving the scene of an accident. She pleaded not guilty. If convicted on all counts, she could face a maximum of eight years in prison.