The MARC website now has more of the info on the Vintage Electronics Extravaganza coming July 9-11 in Kalamazoo www.michiganantiqueradio.org . There is a link there showing where sellers are setting up inside too. This will be the first ALL INDOORS multi-day vintage electronics event in the USA.
Note that this new venue offers on site camping if you register with the facility. Several motels are at the freeway exit.
There is a great vintage car museum in Kzoo too, seewww.thegilmore.com for info on that.