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Authors
- Robb, R. L. (Robert Lee)1
- Robert Clarke & Co. compiler.1
- Roberts, William C. (William Currie), 1810-18731
- Rockefeller Foundation. International Health Commission.1
- Rockwell, Norman, 1894-19781
- Rodermund, Matthew Joseph, author1
- Rogers, David.1
- Roosa, D. B. St. John (Daniel Bennett St. John), 1838-19081
- Root, Harmon Knox.2
- Rosenstein, I. G.1
- Ruppricht, S. (Siegfried), 1778-1
- Rush, Benjamin, 1746-181326