Hello, as shadetreeret said there is a club and newsletter and if that's something you're interested in let me know as I am ahead of it. We also have a link_disallowed page you can go to also. Our club's national show this year will be in Kalamazoo, Michigan June 27-29. As far as production goes, 2243 were reportedly built from late 37 to early 39. however serial numbers indicate a few more than that but not by much. I estimate somewhere between 350-450 still exist. Just since I started a serial number registry of GBs I'm up over 50. They seem to keep turning up.
Jeff Oliver- is your GB a standard or row crop and do you know the serial number?