Sorry for your loss and I know that John is missed by the NARHAMS crew. John's MicroMaxx activities were always an inspiration.
I'm in Winchester, VA so about a two hour drive from the GSFC visitor center.
NOVAAR hasn't done a fundraising auction for a while, but the club will do one after the Saturday July 9 launch at Great Meadow in Old Tavern, VA.
If there's stuff you want to see go to a good home I'll be happy to arrange for it to be picked up sometime before the auction. Or bring the stuff that day and come to the potluck dinner before the auction.
Items can either be donated completely to NOVAAR, or the club can keep a 10% donation and return the rest to whoever donates the items.