The 36 columns in place, work is underway on the frieze, where the names of the 36 states in the Union at the time of Lincoln's death are inscribed, photographed in 1915. #

The Lincoln Memorial under construction, with the Potomac in the background, and several Navy and Munitions Buildings in the foreground, on Constitution Avenue, circa 1919. #

Finishing touches are made to the huge statue of Abraham Lincoln, which stands just inside the entrance of the Lincoln Memorial, prior to its dedication in Washington, D.C., on May 30, 1922. #

Spring-like weather brought out the dancers in January. With the thermometer registering 70 degrees, Washington experienced the hottest January 9th in 57 years. This brought forth this unusual sight of the Stafford Pemberton dancers gamboling on the green before the Lincoln Memorial reflecting pool with the Washington monument in the background on January 10, 1930. #

Original caption, from 1930: “Who'd stand up before this charming firing squad. George Washington University co-ed rifle team, who are favored to win the national title, are the crack girl shots of the country. Left to right: Helen Prentiss, Marian Stewart, Suzanne Jamison, Marjorie Folsom, Betty Clark, Mae Huntzberger, Jane Cuvillier, Grace McLean, Ermyntrude Vaiden, Helen Taylor, and Verna Parsons. The girls have placed second in the National Rifle Association intercollegiate matches for the past three years.” #

Local children take advantage of the snow strewn over the steps of the Lincoln Memorial, converting the slope into a hill for sledding on February 9, 1935. #

Thousands stand before the Lincoln Memorial and listen to the noted African American contralto Marian Anderson gives a free concert after she was barred from singing in the concert hall of the Daughters of the American Revolution, on April 9, 1939. #

Soldiers with a machine gun set up near the Lincoln Memorial to guard the Memorial Bridge approach to Washington, D.C., on December 8, 1941. The added security was a precautionary measure taken in the wake of the Japanese attack on Pearl Harbor the previous day. #

U.S. Civil Rights leader Martin Luther King, Jr. waves to supporters from the steps of the Lincoln Memorial on August 28, 1963, during the famous March on Washington. #

U.S. President-elect Barack Obama speaks during the ‘We Are One’: Inaugural Celebration at the Lincoln Memorial in Washington, D.C., on January 18, 2009. #

The undercroft (basement chamber) of the Lincoln Memorial, seen during a tour on February 15, 2016, after a ceremony announcing the philanthropist David Rubenstein's gift to the National Park Foundation's Centennial Campaign for America's National Parks. #