21. Second Corps mail wagon Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
22. Slave pen, Alexandria, Va. Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
23. Surgeon Hawks 50th New York Engineers, November, 1864 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: November 1864 Institution: Boston Public Library
24. Trossel's house, Gettysburg, July 4, 1863 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: July 4, 1863 Institution: Boston Public Library
25. The welcome visitor; Sanitary Commission wagon Creator: Gardner, James, 1832- Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: April 1865 Institution: Boston Public Library
26. Where Sumner's corps charged at Antietam Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: September 17, 1862 Institution: Boston Public Library
27. A 12-pdr. Howitzer gun captured by Butterfield's brigade near Hanover Court House, May 27, 1862 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: May 27, 1862 Institution: Boston Public Library
28. 13th N.Y. Cavalry on inspection, Prospect Hill Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
29. 2d N.Y. Artillery, (Co. "F") at Fort C. F. Smith Creator: Smith, William Morris Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: August 1865 Institution: Boston Public Library
30. 2d N.Y. Artillery, (Co. "K") at Fort C. F. Smith Creator: Smith, William Morris Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: August 1865 Institution: Boston Public Library
31. 2d N.Y. Artillery, (Co. "L") at Fort C. F. Smith Creator: Smith, William Morris Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: August 1865 Institution: Boston Public Library
32. 8th U.S. Infantry, Provost Guard, Fairfax Court House, Va., February, 1865 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: February 1865 Institution: Boston Public Library
33. 93d New York Infantry, at Antietam, Md. Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
34. Abraham Lincoln, President. Photograph taken in 1864 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: 1864 Institution: Boston Public Library
35. Admiral Dahlgren and staff on the "Pawnee" Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
36. Admiral D.D. Porter, on the deck of flagship Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
37. Admiral Farragut Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
38. Alatoona Pass, Ga., where "Hold the fort" originated Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
39. The Ambulance Corps Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
40. Ambulance drill Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library