Writings Julian Coolidge

^ white, h. s. (1919). circle , sphere geometry . bull. amer. math. soc. 25 (10): 464–467. doi:10.1090/s0002-9904-1919-03230-3. 
^ snyder, virgil (1941). review: j. l. coolidge, history of geometrical methods . bull. amer. math. soc. 47 (1): 20–22. doi:10.1090/s0002-9904-1941-07368-4. 
^ blumenthal, leonard m. (1947). review: j. l. coolidge, history of conic sections , quadrics . bull. amer. math. soc. 53 (1, part 1): 36. doi:10.1090/s0002-9904-1947-08730-9.