- International Congress of Mathematicians (3)
- Hoare, Alfred (2)
- Russo, Joseph Louis, 1884- (2)
- Collodi, Carlo, 1826-1890 (1)
- Freudenberg, Walter (1)
- Goggio, Emilio (1)
- Grandgent, C. H. (Charles Hall), 1862-1939 (1)
- International Council of Tanners (1)
- International Management Congress (1)
- Schlomann, Alfred, 1878- (1)
- Weiss, Samuel A. (Samuel Abba), 1922- (1)
- Wiese, Kurt, 1887- (1)
- Wilkins, Ernest Hatch, 1880-1966 (1)