This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionFort Stevens Park DC Lincoln marker.JPG
English: Fort Stevens Park is the location of a Civil War era fortification on the north side of Washington, D.C. in the Brightwood neighborhood. It was part of the Civil War defenses of the District of Columbia and named for Brig. Gen. Isaac Ingalls Stevens who was killed at the Battle of Chantilly (Fair Oaks), Virginia, on September 1, 1862. The fort was the only place in the District of Columbia that the Confederate Army attacked, and the only the place a sitting US President was fired upon in an armed conflict. General Jubal A. Early lead 20,000 Confederates on July 11–12, 1864. The current fortification is a recreation built by the Civilian Conservation Corps in 1937.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the licence, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible licence as the original.