Vintage Computer collectors and those with an interest in the history of computing are known to gather from time to time. I've attended some of these events recently including:
The 2002 Vintage Computer Festival (VCF5)
Computer History Museum Open House
The 2003 Vintage Computer Festival (VCF6) - Erik Klein's pictures.
The 2003 Vintage Computer Festival (VCF6) - Dwight Elvey's pictures.