Table of Contents

Table of Contents:IntroductionSwim PaddlesPennsylvania FireplaceArmonicaBifocals, the Long Arm and the Library Company of PhiladelphiaPrinting PressPaper MoneyPoor Richard's AlmanacThe Gulf Stream MapElectricity and the Lightning RodThe Union Fire Company and the Pennsylvania HospitalThe University of Pennsylvania, Street Improvements and Day Light Savings TimePostal ServiceThe Declaration of IndependenceThe Constitution of the United States and the Treaty of Alliance