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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room. The tour was broadcast on May 26, 1970.

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 shares the President's Dining Room with Wallace. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room with producer and creator Don Hewitt. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room with Reasoner, at far right. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room with producer and creator Don Hewitt. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room with Wallace and Reasoner. The tour was broadcast on May 26, 1970.

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 shoots a segment in the President's Dining Room, located on the Second Floor. The tour was broadcast on May 26, 1970.