61. "Hard tack" Acquia Creek, February, 1863 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: February 1863 Institution: Boston Public Library
62. "Hard tack and salt hoss," Cedar Level, Va., August, 1864 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: August 1864 Institution: Boston Public Library
63. Headquarters 10th Army Corps, Hatchies Run, Va. Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
64. Headquarters 13th N.Y. Cavalry, Prospect Hill Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
65. Headquarters 1st Brigade of Horse Artillery (popularly called "Flying Artillery") Creator: Gibson, James F., 1828- Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: February 1864 Institution: Boston Public Library
66. Headquarters of Gen. O.B. Wilcox, in front of Petersburg, August, 1864 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: August 1864 Institution: Boston Public Library
67. Independent Pennsylvania Battery "E" (Knapp's Battery) Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: September 1862 Institution: Boston Public Library
68. Interior of an Army hospital, 1864 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: 1864 Institution: Boston Public Library
69. The "Lincoln Gun" at Fortress Monroe, Va., December 3, 1864 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: December 3, 1864 Institution: Boston Public Library
70. Maj. Eckert and group of military telegraphers Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. May 1864–March 1865] Institution: Boston Public Library
71. Military telegraph wagon, for field telegraphy Creator: Knox, David Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: June 1864 Institution: Boston Public Library
72. "Mounting guard" Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: April 7, 1864 Institution: Boston Public Library
73. "Mounting guard" in Fort Wagner, Morris Island, S.C. Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
74. Quarters of Company "D" U.S. Engineers Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. October 1863–March 1864] Institution: Boston Public Library
75. Review of Col. Dwight's "Excelsior Brigade" Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1864] Institution: Boston Public Library
76. 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
77. Surgeons of the 2d Division, 9th Corps Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. May 1864–March 1865] Institution: Boston Public Library
78. Surgeons of the 3d Division, 9th Corps Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: August 1864 Institution: Boston Public Library
79. Surgeons of the 4th Division, 9th Corps Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: July 1864 Institution: Boston Public Library
80. The sutler's tent Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: August 1863 Institution: Boston Public Library