The Ma & Pa Railroad Heritage Village at Muddy Creek Forks in southern York County, Pa., invites the public to their 19th annual Railroad Heritage Day on Saturday.The open house, from 10 a.m. to 5 p.m., features special exhibits, presentations, displays, demonstrations, activities, food, tours of the historic village and signature motorcar train rides through the scenic Muddy Creek Valley along the rail line that once connected Baltimore and York and ran through Harford County from Whiteford/Cardiff to Fallston.The attractions in the Muddy Creek Forks village take visitors back to life as it was in 1915 and include the A.M. Grove General Store that was built in 1899 and has a post office, railroad ticket office, player piano and a hand operated freight elevator.Outside, track working demonstrations will be offered and, as an added attraction, Don Kirkpatrick of Fredericksburg, Va., is bringing his hand pumped railcar so visitors can propel themselves down the tracks as men did in the railroad's early days.Heritage Day also is the only time each season when Ma & Pa locomotive No. 82 and caboose No. 2007 are open to the public.Admission is always free to the historic village and buildings. Motorcar train rides run at 45-minute intervals all day and frequently sell out hours in advance so advance purchase of tickets at www.MaAndPaRailroad.com is advised. Tickets are $7 for adults and $5 for children.The Ma & Pa Railroad Heritage Village is at 1258 Muddy Creek Forks Road in Airville, Pa.Other village buildings include the historic roller mill, a 9,000 bushel grain elevator, fertilizer warehouse and bank barn. Nearly three dozen historically trained costumed interpreters will add a living history flavor to the experience as they interact with guests.This year is the 140th anniversary of the completion of the narrow gauge Peach Bottom Railway from York to Delta.The arrival of the railroad totally transformed the communities it served, and the narrow gauge predecessors of the Ma & Pa Railroad will be highlighted Saturday. Walter Holloway, a Ma & Pa Railroad historian from Bel Air, will present a slide show on the narrow gauge predecessors of the Ma & Pa. This featured event will be offered three times during the day. He will also be bringing photographs and documents to display.Holloway's connection to the railroad goes back five generations. The Baltimore and Lehigh Railroad, Maryland narrow gauge predecessor of the Ma & Pa, was organized at a meeting in the Forest Hill store of his great-great-grandfather, John B. Roe. His grandfather, Walter C. Roe, was a long-time station agent at Forest Hill and later Bel Air, and his uncle, Walter C. Roe Jr., was a track man and station agent as well.Holloway said he has three main points he hopes attendees will take away from his presentation: "How the railroad was built, how it was started and where it ended up."The Pennsylvania Lego Users Group will return with its popular diorama of the Ma & Pa Railroad, showing the station in Red Lion, Pa., along with the various equipment used during numerous eras of the railroad operation. The 17-by-3-foot display is made entirely of Legos. A scavenger hunt, various crafts, games and other activities are planned especially for the younger generation.The Maryland & Pennsylvania Railroad Preservation Society is a nonprofit organization dedicated to preserving the heritage of the famous "Ma & Pa" Railroad. It operates the Ma & Pa Railroad Heritage Village, which highlights the central role the railroad played in every aspect of life in the early 20th century in Harford and York counties.