The ASAA annual exhibition will open on the 7th at BWI Airport - close enough for a side trip if you are attending the OtF foum. Since I am the current ASAA Treasurer, the OtF foum might not fit my schedule, but if you are in the BWI area, the exhibition will be hanging in the International Terminal starting May 7th and running through 7 September.
Don't know how many paintings yet, but typicall in the neighborhood of 50 entries make the cut to get in.
More info can been seen at:
http://www.asaa-avart.org/vBWIExhibitEntrycalls.html