REMOVE

1. Geography Book
2. Data Visualization
3. Book Map
4. 1855

WHAT

1. Health; Disease (2)

WHERE

1. England (2)
2. London (England) (2)

WHO

1. C.F. Chefins (2)
2. Commonwealth Fund (2)
3. Frost, Wade Hampton, 1880 … (2)
4. John Church (2)
5. Richardson, Benjamin Ward … (2)

WHEN

1. 1936 (2)