This is maaaaybe premature there, ESPN. Maryland #1 FWIW.
Michigan Today has put up an ARTICLE on the history of college football's oldest and best rivalry trophy. The main event is a picture gallery that's worth your time to view. The article notes that there is a new BOOK on the historic rivalry, along with a link to an interview with the AUTHORS of that book the Michigan Today published last week. It's been a tough season so far boys - let's keep that jug in Ann Arbor where it belongs!
The Jug in 1922, along with a Wisconsin megaphone that was a spoil of war for the Wolverines that year. Coach Yost returned it to Wisconsin, because unlike Minnesota, our team doesn't steal stuff.
The current Michigan Today has a slideshow article featuring covers from various football programs. The 1925 OSU program is copied below, but they're all worth a peek if you like this sort of thing. Article is here: http://michigantoday.umich.edu/2012/10/slideshow/index.html#1 .