EVB2923322: President Lyndon Johnson and wife Lady Bird during a White House ceremony. 1964 / Bridgeman Images

EVB2923331: President Lyndon Johnson meeting with West German Chancellor Ludvig Erhard (left). With reduced tensions in Germany and the demand for troops in Vietnam, Johnson proposed to Erhard review the required strength of NATO Forces stationed in Germany. Sept. 26, 1966 / Bridgeman Images

EVB2923352: Former President Lyndon Johnson during an interview Walter Cronkite. He described the events leading up to the decision to halt the bombing of North Vietnam in 1968. Feb. 3, 1970 / Bridgeman Images

EVB2923400: Patriarch Joseph P. Kennedy with his 17 grandchildren on his birthday, Sept. 6, 1961 / Bridgeman Images

EVB2923406: Kennedy outing to Hialeah Race Track, 1955 / Bridgeman Images

EVB2923409: Kathleen Kennedy, with Lord Hartington, heir to the Duke of Devonshire. The couple married on May 6, 1944. Kathleen's mother Rose objected to the marriage of her daughter to the non-Catholic English aristocrat / Bridgeman Images

EVB2923412: Robert Kennedy shaking hands during 1968 campaign / Bridgeman Images

EVB2923451: Caucasian man with two African pigmy men. c. 1930 / Bridgeman Images

EVB2923454: A camel caravan on the Khyber Pass on the Northwest Indian Frontier. c. 1930s / Bridgeman Images

EVB2923156: President Richard Nixon extends himself greeting people at Angra do Heroismo, Azores, Dec.14, 1971 / Bridgeman Images

EVB2923162: President Richard Nixon shakes hands with bystanders on his 80-mile motorcade campaign swing through Northeast Ohio. Oct. 28, 1972 / Bridgeman Images

EVB2923201: President Richard Nixon and Premier Chou En-lai begin the third day of formal talks, in the official Guest House where Mr. Nixon is staying while in Beijing, Feb. 23, 1972 / Bridgeman Images

EVB2923216: First Lady Pat Nixon (left) and Imelda Marcos stand under an umbrella at Manila airport, July 27, 1969 / Bridgeman Images

EVB2923222: President Richard Nixon and President Nicolae Ceausescu wave to huge, flag-waving crowd during motorcade in Bucharest, Romania. August 2, 1969 / Bridgeman Images

EVB2923239: 1952 Republic Party Nominees, 1952 / Bridgeman Images

EVB2923282: Tricia Nixon in second floor Family Dining Room. She wears a lace dress with a satin ribbon at the waist. c. 1971 / Bridgeman Images

EVB2923263: Vice President-elect Richard Nixon, carry daughter Tricia, and Pat with Julie on vacation, Nov. 11, 1952 / Bridgeman Images

EVB2923272: Former Vice President Richard Nixon during airport news conference on his return from Latin Americ, May 16, 1967 / Bridgeman Images

EVB2923315: Heads of State at the funeral of Conrad Adenauer, 1967 / Bridgeman Images

EVB2923287: Former Vice President Richard Nixon and wife Pat at a victory party, March 11, 1968 / Bridgeman Images

EVB2923327: President Lyndon and Lady Bird Johnson sitting on a fence at the LBJ Ranch. They were proud Texans and celebrated Texas clothing, food, and lifestyle. 1964 / Bridgeman Images

EVB2923345: Lynda Bird Johnson (right) is greeted backstage by Barbra Streisand. The President's daughter attended Streisand's hit Broadway Musical, 'Funny Girl.' June 9, 1965 / Bridgeman Images

EVB2923363: President Lyndon Johnson stands with head lowered as he awaits the arrival of President Hastings Kamuzu Banda of Malawi. Dec. 12, 1964 / Bridgeman Images

EVB2923332: President Lyndon Johnson meeting British Prime Minister Harold Wilson. The Anglo-American special relationship was strained by differences over US Vietnam policy. June 8, 1967 / Bridgeman Images

MES2914052: Crocifisso nel tufo necropolis, Orvieto, Umbria, Italy / Bridgeman Images

MES2914165: St. Clemente abbey, Casauria, Abruzzo, Italy (photo) / Bridgeman Images

SZT2914501: Fritzi Massary (b/w photo) / Bridgeman Images

SZT2914507: Mary Wigman (b/w photo) / Bridgeman Images

AAI2914524: Least Wanted III, 2016 (silk screen print on paper), Studwell, David / Bridgeman Images

SZT2914515: Mary Wigman (b/w photo) / Bridgeman Images

AAI2914522: Least Wanted IV, 2015 (silkscreen on paper), Studwell, David / Bridgeman Images

MES2914565: Roselle archeological site, Roselle Tuscany, Italy / Bridgeman Images

ZKM2914996: Sugar bowl, 1824 (porcelain), Russian School, (19th century) / Bridgeman Images

RBT2914919: Solscape, Sylt, Germany, 2010 (b/w photo), Behnert, Ronny / Bridgeman Images

SPM2914952: Matryoshka and child, Sergiev Posad, Moscow, Russia, 2007 (wood), Russian School, (21st century) / Bridgeman Images

ZKM2915035: Saucer, 18th century (porcelain), German School, (18th century) / Bridgeman Images