U.S.National Ski & Snowboard Hall of Fame – The United States Ski & Snowboard Hall of Fame and Museum. Dedicated to supporting the skiing heritage in our nation.
The MSIA Virtual Hall of Fame. The Michigan Ski Industries Association has recognized some of the state’s pioneers in a virtual hall of fame on their goskimichigan website.
skilifts.org Annual Lift Construction Survey for North America. Statistics for new lifts, state by state from 1963 through 2009.
Defunct Ropeways lists abandoned lifts. This is the English version of this German site which lists abandoned aerial and surface lifts in Germany, Austria, Switzerland, Italy, France, and America. The webmaster says there is more content in the German version.
History of the Ishpeming Ski Club from the club’s official site.
Michigan’s Long History of Ski Jumping, by Vivian M. Baulch, Detroit News, Feb. 1, 2002. Compiled from clips and photos in the DN archive.
Ski Jumping Hill Archive – Michigan (skisprungschanzen.com): a German site listing current and historic sites, campetitions, records, etc. from all over the world. The link is to their Michigan data, but you can easily navigate around to all their other data.
Watch here for links to sites providing historical information.
MILSAP 
I have a poster/map of Colorado showing all the lost ski resorts, it was interesting and I paid money for it and have it on my wall. Is there a map like that of Mich? did not see it on your site. Something you should consider if you don’t have it.
Great idea, Al. We’ll work on it. However, there are a few we cannot place exactly.
I heard the best way to hunt for lost ski areas in Michigan is to review road maps from 1955-1970. That was the heyday of Michigan’s small resorts.
Love this MILSAP history-keeping and you are all invited to Ishpeming to tour the US Ski & Snowboard Hall of Fame. Yep, it’s right here in our home state. . .not Stowe, Sun Valley or Aspen, but right here in Da Yoop! Be proud we led the way with organized skiing in America, a product of our Norwegian heritage and Carl Tellefsen’s vision. In fact, the 129th ANNUAL Ski Jumping Tournament at Suicide Hill is tomorrow, February 17, 2016, beginning at 6 pm. Bell ringers and horn honkers welcome for this historic event. Put a pastie in your pocked and come witness this age-old snowsport.