Subjects
- McKinstry, J. (Justus), 1814-1897.1
- McMaster, Zalamon James, 1831-1863.1
- McMullen, Warren.1
- Meals1
- Meat1
- Medical Staff1
- Mid-Atlantic Region1
- Middleton, Samuel.1
- Military Facilities2
- Military Hygiene10
- Military Medicine3
- Military Medicine -- organization & administration4
- Military Personnel[remove]1,000
- Miller, Wesley F., -1863.1
- Mills, Madison, 1810-1873.1
- Mining5
- Minors3
- Missouri1
- Mitchell, G. D., active 1863.2
- Mulholland, Eleazar.1