Titles
- [Henry P. Birmingham]4
- [Herald R. Cox]4
- [Hermann L.F. von Helmholtz]4
- [Herrman L. Blumgart]4
- [Hideyo Noguchi]4
- [Hiram J. Bush]4
- [Homer L. Skinner]4
- [Horse litters]4
- [Hospital trains]4
- [Howard T. Ricketts]4
- [Human skeleton]4
- [Ida A. Bengston]4
- [Il'ia Il'ich Mechnikov]4
- [James B. Ryon]4
- [James C. Magee]4
- [James C. Perry]4
- [James Carroll]4
- [James D. Glennan]4
- [James E. Farris]4
- [James R. Shaw]4