Black and white photograph of a group of teachers and young students performing and dancing with their arms raised during class at a Manhattan elementary school in New York City, New York. Scanned from the negative.

Black and white photograph of a teacher and a group of young students gathered together and signing with their hands in a Manhattan elementary school classroom in New York City, New York. Scanned from the negative.

Black and white photograph of the exterior of Manor Mount parsonage, the home of German Theologian, Dietrich Bonhoeffer, in the borough of Lewisham in London, England from 1933 until 1935. Scanned from the negative.

Black and white photograph of the exterior of Manor Mount parsonage, the home of German Theologian, Dietrich Bonhoeffer, in the borough of Lewisham in London, England from 1933 until 1935. Scanned from the negative.

Black and white photograph of Mark Twain's boyhood home located on Main Street in the heart of Hannibal, Missouri. It is currently known as the Mark Twain Boyhood Home and Museum. Scanned from the negative.

Black and white photograph of the interior of the Mark Twain House located on Main Street in the heart of Hannibal, Missouri. It is currently known as the Mark Twain Boyhood Home and Museum. Scanned from the negative.

Black and white photograph of an interior room of the Mark Twain House located on Main Street in the heart of Hannibal, Missouri. It is currently known as the Mark Twain Boyhood Home and Museum. Scanned from the negative.

Black and white photograph of an interior bedroom of the Mark Twain House located on Main Street in the heart of Hannibal, Missouri. It is currently known as the Mark Twain Boyhood Home and Museum. Scanned from the negative.

Black and white photograph of Mark Twain's boyhood home located on Main Street in the heart of Hannibal, Missouri. It is currently known as the Mark Twain Boyhood Home and Museum, and features an informational sign for "Tom Sawyer's Fence" in…

Black and white photograph of the kitchen fireplace hearth of the Mark Twain House located on Main Street in the heart of Hannibal, Missouri. It is currently known as the Mark Twain Boyhood Home and Museum. Scanned from the negative.

Black and white photograph of a wood burning stove and table in the Mark Twain House located on Main Street in the heart of Hannibal, Missouri. It is currently known as the Mark Twain Boyhood Home and Museum. Scanned from the negative.

Black and white photograph of a street scene in Cambridge, England. In the photograph, a young man and woman are having a conversation while leaning on a bicycle in the foreground and various small business signs along Market Street can be seen in…

Black and white photograph of (left to right) Mason Hoffenberger, John Sebastian, and Bob Dylan sitting around a table at Café Espresso, Woodstock, New York. By Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of Maureen Moore, known as Lady Dunbar of Hempriggs and the "foster sister" of author C.S. Lewis, whom he lived with at his home, The Kilns, along with her mother, Janie King Moore, in Risinghurst, Oxford, England. Scanned…

Black and white photograph of the band MC5 performing at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of the band MC5 performing at the WCFL Big 10 Summer Music Festival in Chicago, Illinois on July 18, 1970, by Douglas R. Gilbert. Scanned from the negative.

Black and white photograph of a Memorial Day parade in St. Charles, Illinois. In the photograph, the parade is marching down main street with multiple Girl Scout troops leading the way as the crowd looks on. A Texaco gas station sign and the marquee…

Black and white photograph of a Memorial Day parade in St. Charles, Illinois. In the photograph, the parade is marching down main street with multiple Girl Scout troops leading the way as the crowd looks on. The marquee for the Arcada Theatre can be…

Black and white photograph of a Memorial Day parade in St. Charles, Illinois. In the photograph, the parade is marching down main street with multiple Boy Scout troops leading the way as the crowd looks on. In the foreground, two young scouts are…

Black and white photograph of a man in uniform speaking at an outdoor podium as a part of a Memorial Day gathering in St. Charles, Illinois. In the photograph, the serviceman is giving a speech to the surrounding audience from a podium that has the…

Black and white photograph of the memorial rally that took place in honor of Dr. Martin Luther King, Jr., in New York City's Central Park. In the photograph, crowds of people are gathering around the Bethesda Fountain in the Bethesda Terrace area of…

Black and white photograph of the memorial rally that took place in honor of Dr. Martin Luther King, Jr., in New York City's Central Park. In the photograph, crowds of people are gathered onstage around an unidentified musical performer playing a…

Black and white photograph of the memorial rally that took place in honor of Dr. Martin Luther King, Jr., in New York City's Central Park. In the photograph, crowds of people are gathered onstage around an unidentified musical performer playing a…

Black and white photograph of the memorial rally that took place in honor of Dr. Martin Luther King, Jr., in New York City's Central Park. In the photograph, a large crowd of people are gathered together in the park to pay their respect to the late…