PBS
Pbs: Echoes From the White House
Based on the PBS Documentary, Echoes from the White House will give you a virtual tour of the official residence of the President. You will see the White House from its earliest days up to the present day.
US Government Publishing Office
Ben's Guide to u.s. Government: Symbols of u.s. Government:the White House (K 2)
This site gives some basic information on the White House for a young student.