New old pics and Clinton era

Found some more good old-timey photos in the Library of Congress, including some of the Blue Room, State Dining Room, North Portico, and an interesting one of workers digging a trench for steam pipes from the EEOB to White House in 1923. I also added the famous picture of the Harrison children in their goat-drawn cart on the south lawn.

I also added a couple of Clinton-era pics that fill out that period for the Roosevelt Room, Green Room, Yellow Oval Room, and East Sitting Hall, provided by Pete.