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.

In 1896, Otto Wagner's "Modern Architecture" shocked the European architectural community with its impassioned plea for an end to eclecticism and for a "modern" style suited to contemporary needs and ideals, utilizing the nascent constructional technologies and materials. Through the combined forces of his polemical, pedagogical, and professional efforts, this determined, newly appointed professor at the Vienna Academy of Fine Arts emerged in the late 1890s - along with such contemporaries as Charles Rennie Mackintosh in Glasgow and Louis Sullivan in Chicago - as one of the leaders of the revolution soon to be identified as the "Modern Movement." Wagner's historic manifesto is now presented in a new English translation - the first in almost ninety years - based on the expanded 1902 text and noting emendations made to the 1896, 1898, and 1914 editions. In his introduction, Dr. Harry Mallgrave examines Wagner's tract against the backdrop of nineteenth-century theory, critically exploring the affinities of Wagner's revolutionary élan with the German eclectic debate of the 1840s, the materialistic tendencies of the 1870s and 1880s, and the emerging cultural ideology of modernity. Modern Architecture is one of those rare works in the literature of architecture that not only proclaimed the dawning of a new era, but also perspicaciously and cogently shaped the issues and the course of its development; it defined less the personal aspirations of one individual and more the collective hopes and dreams of a generation facing the sanguine promise of a new century