The convention dates for the 41st Annual Flying Buffalo Convention and for the 4th Annual T & T Convention coincide on July 26th, 27th, and 28th of 2013.
That's this upcoming weekend, for the calendar impaired.
For more info, check out the links below:
http://www.flyingbuffalo.com/1999conv.htm
http://www.flyingbuffalo.com/tntconv.htm