UPDATE!
Here is the text from an email I received for an inquiry regarding the Richmond Gun Shows.
The Richmond shows, as I have been told, are not allowing gun shows at the venue any longer. As for the Manassas venue, I have not heard. You need to contact the promoters of those shows. Here is a link to our Promoters Links page:
http://www.gunshows-usa.com/promoters_links.shtml