The first thing that comes to my mind is that it was well planned, and whoever they were, were there before as a visitor. It would seem they knew where the stuff was kept, and also knew the value of the items. If they weren't marked for identification, that would be too bad because if not I also suspect they'll be on sale at some model rail show or swap meet. So with friends or associates like that who needs enemy's.I can say they knew what they were looking for when they got to the RR room.
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ModelRailroadBookstore.com - An online model railroad bookstore featuring a curated selection of new and used books. Layout design, track plans, scenery and structure building, wiring, DCC, Tinplate, Toy Trains, Price Guides and more.