National PRRT&HS Home Page Preserving the heritage of The Standard Railroad of the World for future generations Join UsRenew Society Services Society Contacts Products for Sale Lewistown Station and Archives PRR Research PRR Chronology Annual Meetings Donations Chapters Discussion Web Book Errata Links M1B 6787 East Altoona April 1957 was built by Lima placed into service on April 3 1930 as an M1A converted to M1B in September 1946 and was sold for scrap in September 1959. John Prophet photo. MISSION The Societys mission is to further scholarly learning and interest in the Pennsylvania Railroad PRR and its predecessor companies by stimulating and encouraging the collecting researching recording and preserving of all technical historical and practical information concerning the PRR and to make this information available to interested persons in appropriate ways such as publications meetings and the maintenance of a research archive. In addition the Society hopes to further accurate modeling .