This volume describes buildings in an area central to the development of the US. It shows the diverse styles of the Commonwealth State that has its hybrid regional architectural roots in both Britain and the new experiment in democracy. Following an overview of Pennsylvania's historical and cultural geography, sections organized by region, then county, present descriptions of the homes, commercial buildings, and public spaces of Philadelphia to the resort country of the Pocono Mountains.

This is a directory of companies involved in wood-framed building deconstruction, dismantling and reused building materials, with an emphasis on those that use, resell, and/or re-manufacture salvaged wood. Companies in this directory range in scope from those that carryout targeted building removals, such as historic barns, strictly for the purpose of harvesting the antique wood in these buildings, to companies that conduct residential and commercial demolition where the primary goal is building removal, and the recovery of materials is conducted opportunistically as a by-product. The bulk of companies listed are those that either salvage or sell building materials. For ease of use, the directory lists companies two ways, alphabetically by state and then alphabetically by company type, and alphabetically by company type and then alphabetically by state.

Over the concluding decades of the twentieth century, the historic preservation community increasingly turned its attention to modern buildings, including bungalows from the 1930s, gas stations and diners from the 1940s, and office buildings and architectural homes from the 1950s. Conservation efforts, however, were often hampered by a lack of technical information about the products used in these structures, and to fill this gap Twentieth-Century Building Materials was developed by the U.S. Department of the Interior’s National Park Service and first published in 1995. Now, this invaluable guide is being reissued—with a new preface by the book’s original editor. With more than 250 illustrations, including a full-color photographic essay, the volume remains an indispensable reference on the history and conservation of modern building materials. Thirty-seven essays written by leading experts offer insights into the history, manufacturing processes, and uses of a wide range of materials, including glass block, aluminum, plywood, linoleum, and gypsum board. Readers will also learn about how these materials perform over time and discover valuable conservation and repair techniques. Bibliographies and sources for further research complete the volume. The book is intended for a wide range of conservation professionals including architects, engineers, conservators, and material scientists engaged in the conservation of modern buildings, as well as scholars in related disciplines.