We'll always have the memories.

NBC News has learned that White House Press Secretary Tony Snow will step down Sept. 14 as the president's chief spokesman and the public face of the White House. Dana Perino is expected to replace him.

He is expected to make his announcement during today's on-camera White House briefing at 12:45pm. President Bush is expected to make a statement at the briefing. Snow formally informed the president yesterday.

Snow says his departure is based on family finances. "If I had the dough I'd stay 'til the bitter end,” Snow told NBC News. As an assistant to the President, Snow earns the highest-level salary among White House officials at $168,000 a year.