[1] Sellery directed the UW summer session from 1906 to 1911, and as dean of the University of Wisconsin–Madison College of Letters and Science from 1919 to 1942, when he retired.

[3] Sellery publicly denounced Alexander Meiklejohn and UW President Glenn Frank's Experimental College, which he saw as demeaning the faculty and their institution.

[6] Near the beginning of his term, Frank had a private investigator make files on Wisconsin key political and educational figures including Sellery.

[6] Frank attempted to fire Sellery in the first quarter of 1929, which backfired due to faculty alliance with the dean.

[6] When the Board of Regents removed Glenn Frank in January 1937, Sellery served as acting university president for six months.