http://www.nationalregisterofhistoricplaces.com/WI/Vilas/state.html
Eagle River Stadium (added 1994 - Building - #94000650)
Also known as Jack O'Lantern;Eagle River Recreation Association,Inc.
4149 WI 70, Eagle River
Historic Significance: Architecture/Engineering, Event
Architect, builder, or engineer: Hanisch, Max
Architectural Style: Modern Movement
Area of Significance: Entertainment/Recreation, Engineering
Period of Significance: 1925-1949
Owner: Local Gov't
Historic Function: Recreation And Culture
Historic Sub-function: Sport Facility
Current Function: Recreation And Culture
Current Sub-function: Sport Facility

http://www.eagleriver.org/history.asp
Eagle River Sports Arena was once part of the Jack 0' Lantern Resort Complex and was patterned after the Lake Placid area. It was built in 1932 and has been used for hockey, figure skating and other events. Originally there were two toboggan slides and a ski jump. It is now listed on the Historic Register and is noted for its unusual roof construction. The Wisconsin Hockey Hall of Fame is housed here. Jack 0' Lantern Lodge was a glamorous gambling lodge back in the 30s and 40s, owned by Chuck Taylor. He sold it to the late Allen Dorfman in 1950 and it was then used to host family friends of high-ranking leaders of the Teamsters Union.

The Hoffa Wars: The Rise and Fall of Jimmy Hoffa By Dan E. Moldea
http://books.google.com/books?id=LjTUONpZpDIC&lpg=PR15&ots=Vo9AjlCzMk&dq=jimmy%20hoffa%20jack%20o'lantern&pg=PR15#v=onepage&q=jimmy%20hoffa%20jack%20o'lantern&f=false