White House Christmas tree have had the first indoor Christmas tree at the White House during the 1850s, variously reported as 1853 or 1856. Others claim the first tree was during President Benjamin Harrison's administration (either in 1888, 1889, or 1891). First Lady Caroline Harrison helped decorate the tree, which was installed in the second floor oval parlor today's Yellow Oval Room. There is an 1880 reference to President John Tyler in the 1840s, hosting a children's party at which there was a Christmas tree with gifts. Following the Harrison administration indoor trees were not always used at the White House. First Lady Lou
White House Military Office residence away from the White House. That same year, the White House Communications Agency was formed to assure that the President always had access to safe, secure, and reliable means of communication. Two years later, President Franklin D. Roosevelt called for the creation of the Presidential Pilot's Office (renamed the Presidential Airlift Group in 2001) to provide air transportation to the President and his staff. The White House Medical Unit was established in the West Wing in 1945. The White House Mess, also contained in the West Wing, was established in 1951 and has been run by the Navy ever