The 10th Annual Train Show sponsored by the Holliston Historical Society will be held at the Holliston Town Hall next weekend. The show, which will feature Thomas the Tank Engine & Friends as special guests, will be open from 10 a.m. to 4 p.m. Saturday and Sunday. Exhibitors include the Brass Caboose, Coastal Maine Railroad, and Waushakum Live Steamers. Newcomers this year are European Train Enthusiasts of Eastern New England. The event is open to the public. Admission is $3 per person, with a $15 family maximum. Admission for children under 5 is free.