The 35th annual Gaithersburg Railroad, Steamship, Transportation Artifacts Show and Sale and the 7th annual Gaithersburg Model Train show will take place on Sunday, November 4, 2012, 9am - 4pm at the Montgomery County Fairgrounds, 16 Chestnut Street, Gaithersburg MD. One admission charge for both shows: $7.00 per person, children under 12 free. The shows and sale stretch through 5 buildings at the Fairgrounds using 50,000 sq. ft. of space.