If you're having trouble staying cool, perhaps you should imagine being outside riding your snowmobile. The Antique Snowmobile Club of America held its annual summer conference over the weekend in Rockford. The group was formed back in 1976 to preserve antique snowmobiles. Back in the 70s, there were about 150 manufacturers making snowmobiles. Now, only four main brands exist. The group hopes to return to make an eventual return to Rockford.