Class, mstr. Friends School (Baltimore), 1895-6; instr. to prof. Lat. Northwestern, 1897-1921; John Evans prof. Lat. lang. & lit., 1921-40; pres. CAMWS, 1930-1.
"On the Usage of Quotiens and Quotienscunque in Different Periods of Latin" (Johns Hopkins, 1897); printed (Baltimore, 1901).
"The Attitude of Alcuin toward Vergil," Studies Gildersleeve, 377-86; Livy Selections from the First Decade (Chicago, 1908); “Prof. Petrie's Tysilio. A Suggestion for Teachers of Caesar,” CJ 19 (1923) 342-55; “Pharmaceutical Latin Again,” CJ 26 (1931) 460-1.
Long is chiefly remembered as a teacher of Northwestern students for 43 years. He is also remembered for his work as chair of Northwestern's faculty athletic commission from 1902 to 1940, during which time he became a charter member of the Big Ten athletic conference and helped form much of its governance.