Could this be a photo from President Abraham Lincoln's New York City funeral procession?
The Washington Post reports that Paul Taylor, a retired federal government accountant in Maryland says he discovered lost photos, believed to show Lincoln's funeral procession moving past Grace Church on Broadway, on an Archives Flickr photo-sharing website. Taylor emailed the photos to the Archive on March 3. The Post reports the photos were taken by Civil War photographer Mathew Brady on April 25, 1865, days after Lincoln's assassination.
Experts at the Archives cautioned to the The Post that while the theory sounds good, there could be other explanations and there is no way to absolutely prove it.