HI,
I'm former past president of the Illinois Mycological Association aka Mushroom Club.
We meet at the North Park Village Nature Center (Pulaski just south of Peterson in Chicago) nine times a year, except for January, February and July, on the first Monday of the month at 7:30 PM. NOTE: we will not have a May meeting this year, because we have two meetings in April due to speaker availability
This is a great place to learn mushroom identification. Members bring fresh specimens to meetings. Forays are also great for learning how to find them as well as ID. While in the Chicago area, there are maybe 20-30 edibles, there are a lot more who are simply interesting and beautiful in their own right.
The San Francisco Club mentioned in this article is huge. They have had as many as 1000 members with a reliably active group of 100. This article touched on an issues we experience here: less and less legal opportunities to pick mushrooms.
Regards,