Arnold, Stevan J.Usage Conditions ApplyCloseUsage Conditions ApplyThe Smithsonian Institution Archives welcomes personal and educational use of its collections unless otherwise noted. For commercial uses, please contact photos@si.edu. Print Biographical HistoryStevan J. Arnold conducted research on squash bees for Paul Hurd in 1963 and 1965 in Mexico, El Salvador, Guatemala, and Costa Rica.Related entitiesHurd, Paul David, 1921-:TopicForm/GenrePersonal name