Figures 9–10 in The bibliography of and taxa proposed by Charles D. Michener

Figures 9–10. Prominent works marking Michener's entry into the study of behavior. 9. The cover of American Social Insects (1951, van Nostrand), coauthored with his wife, Mary H. Michener (1919–2010). 10. The first page of Mich's 1953 paper discussing the evolution of sociality in insects (courtesy of the Kansas Academy of Science).