In this photograph, taken by National Geographic photographer Joseph J. Scherschel on December 21, 1969, President Richard M. Nixon, First Lady Pat Nixon, astronauts from the Apollo 12 lunar exploration mission, and their wives receive guests in the Cross Hall for a worship service. The worship service was conducted in the East Room and attended by approximately 325 guests. The crew of Apollo 12 included the second group of astronauts to walk on the moon, on November 19-20, 1969. Cdr. Pete Conrad, his wife, Jane; lunar module pilot Alan Bean, his wife, Sue; and command module pilot Richard F. Gordon, Jr. and his wife, Barbara were the overnight guests of president and Mrs. Nixon at the White House on December 20-21, 1969.

This behind-the-scenes photograph of Tricia Nixon's "60 Minutes" tour of the White House was taken on April 25, 1970 by James E. Russell. Nixon, the eldest daughter of President Richard M. Nixon and First Lady Pat Nixon, guided reporters Harry Reasoner and Mike Wallace through the living quarters used by the First Family, including rooms not often seen by the public. In this photograph, Nixon shows Reasoner and Wallace the Yellow Oval Room. The tour was broadcast on May 26, 1970.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.

In this photograph, taken on December 13, 1971, First Lady Pat Nixon leads the White House Press Corps on a tour of the holiday decorations in the Blue Room. Mrs. Nixon stands in front of the official White House Christmas Tree, while her daughter, Julie Nixon Eisenhower, watches from the side with the press. The official White House Christmas Tree for 1971 was adorned with velvet-and-silk state flower ornaments created in 1969, gold foil fan ornaments created for the 1970 holiday season, and gold foil angels newly added for 1971.