"1909 Cobe Cup Race Route"
"The Cobe Cup Auto Race of 1909;" Lowell Tribune; Apr. 28, 1998 (on line at http://www.lowellpl.lib.in.us/s1998apr.htm).
"Crowds Expected At Cobe Trophy;" New York Times; April 4, 1909.
https://web.archive.org/web/20111226011449/http://www.motorsport.com/stats/champ/byyear.asp?Y=1909
http://www.champcarstats.com/year/1909.htm
41°25′N 87°22′W / 41.417°N 87.367°W / 41.417; -87.367
