From Snopes:
The rumor about the lamp moved into the print media on 19 February 1993 when the Chicago Sun-Times reported:
Seems first lady Hillary Rodham Clinton has a temper to match her hubby's. Wicked Washington whispers claim Hillary broke a lamp during a heated late night argument with the president. Not to worry: The lamp was in the family quarters, belonged to the Clintons and "wasn't a priceless antique, or anything like that," says a White House source.
The rumor about the lamp moved into the print media on 19 February 1993 when the Chicago Sun-Times reported:
Seems first lady Hillary Rodham Clinton has a temper to match her hubby's. Wicked Washington whispers claim Hillary broke a lamp during a heated late night argument with the president. Not to worry: The lamp was in the family quarters, belonged to the Clintons and "wasn't a priceless antique, or anything like that," says a White House source.