Topical Outline of the History and the Constitution of the United States Harley, John K Heftet / 2013 / Engelsk
History and Geography of Montgomery County, Pa., Together with County and Township Government Heftet / 2018 / Engelsk
History and Geography of Montgomery County, Pa., Together with County and Township Government Innbundet / 2015 / Engelsk
History and Geography of Montgomery County, Pa., Together with County and Township Government Innbundet / 2018 / Engelsk
