41. Company "C" 1st Mass. Cavalry Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. May 1864–March 1865] Institution: Boston Public Library
42. Company "D" 1st Mass. Cavalry Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. May 1864–March 1865] Institution: Boston Public Library
43. Double-turrett monitor "Onondaga," in the James River Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: 1864 Institution: Boston Public Library
44. Embalming surgeon at work Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
45. Encampment at Cumberland Landing, Va. Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: May 1862 Institution: Boston Public Library
46. Headquarters of "Field Officer" in the trenches, Morris Island, S.C. Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
47. Horrors of war Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: 1863 Institution: Boston Public Library
48. How Sherman's boys fixed the railroad Creator: O'Sullivan, Timothy H., 1840-1882 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: October 1863 Institution: Boston Public Library
49. Making coffee. On the lines before Petersburg, Va., 1864 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1864–1865] Institution: Boston Public Library
50. Near view of a "Sibley" tent Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1862] Institution: Boston Public Library
51. Non-commissioned officers, 13th N.Y. Cavalry Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: July 1865 Institution: Boston Public Library
52. Non-commissioned officers, 1st Mass. Cavalry Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. May 1864–March 1865] Institution: Boston Public Library
53. Non-commissioned officers mess, Co. "D" 93d New York Infantry Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: August 1863 Institution: Boston Public Library
54. Non-commissioned officers of General Grant's escort Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. May 1864–March 1865] Institution: Boston Public Library
55. Our boys in the trenches Creator: O'Sullivan, Timothy H., 1840-1882 Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: May 1864 Institution: Boston Public Library
56. Pickett Station, Blackburn's Ford, Bull Run Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
57. Pickett Station near Atlanta, Ga. Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. July 1864] Institution: Boston Public Library
58. A pontoon boat on wheels Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
59. Powder magazine on the lines Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: [ca. 1861–1865] Institution: Boston Public Library
60. Professor Lowe in his balloon Format: Photographs Collection: American Civil War 20th Massachusetts Regiment (Collection of Distinction) Date: May 31, 1862 Institution: Boston Public Library