1. Importance of direct sunlight in the work-room: usefulness in art, and its bearings upon the general health Author(s): Farrar, John Nutting, 1839-1913, author Publication: [Chicago?] : [publisher not identified], [1877?] Subject(s): SunlightDental OfficesOccupational Health
2. The hygiene of mines Author(s): Raymond, Rossiter W. (Rossiter Worthington), 1840-1918, author Publication: [New York?] : [publisher not identified], [1879?] Subject(s): Coal MiningMiningOccupational Health