Subjects
- Medicine -- Practice -- Pennsylvania1
- Medicine -- Practice -- Pennsylvania -- Philadelphia1
- Medicine -- Practice -- Pennsylvania -- Philadelphia -- 18th century1
- Medicine -- Practice -- United States -- 18th century1
- Medicine -- Practice -- United States -- 19th century1
- Medicine -- Russia -- History -- 19th century1
- Medicine -- Study and teaching -- Pennsylvania -- Philadelphia1
- Medicine -- United States -- History1
- Medicine, Military -- United States -- History -- 18th century5
- Mental illness -- Treatment -- United States -- History -- 19th century3
- Mental illness -- Treatment -- United States -- History -- 19th century1
- Mentally ill -- Commitment and detention -- United States -- History -- 19th century1
- Mentally ill -- Treatment -- United States -- History -- 19th century3
- Mercury1
- Midwives -- United States -- History -- 18th Century1
- Military hospitals -- United States3
- Missionaries -- Africa -- Biography1
- Missionaries -- Africa -- Diaries1
- Missionaries -- Africa, Southern -- Biography1
- Missionaries -- South Africa -- 19th century1