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.

Handsome illustrations of more than two hundred bridges, including Columbia River Scenic Highway bridges, covered bridges, and magnificent coastal bridges.

Edition 48 for 2016. The app links to charts, aerial photos, embedded videos, every marina, email support group, all port authorities, the wind charts, every anchorage, worldwide harbors, the tides, engine troubleshooting, all the weather, local knowledge, every dive site, every seabird, every pelagic fish, how to catch fish, animated knots, tips, Cruisers Forum, suggested itineraries, the nav rules, the ocean currents, all safety information, USCG, outboard engines, vessel traffic services, the radio frequencies, videos, every dock, every fuel supply, food, restaurants & supermarkets, every lighthouse, repairs, marine parks, general knowledge, your safety & security, sightseeing, the dive sites, all necessary books, USCG accident reports, safety check, Facebook group, Pinterest, Instagram, the nightlife, Crewfinder, Tumblr, Scuttlebutt, Snapchat group, Tripadvisor, environmental issues, all warnings, Chatbot, Live cams, Livestream, Events, Regulations, Wikipedia, put up your photos & videos, email group, Cruisers Forum, BoatBuzz, Top 20 sailing blogs, Links to all Gov agencies, official alerts & warnings and more... +The app on your phone, tablet and computer ready for any situation. + Link to First Aid and Sea Survival. + Phone and email out of the app. + Your screen can become a full screen weather radar. + See the surrounding ships in real time on your screen with a link to AIS. + View updated charts using online chart viewer. + Before departure download and print current charts in booklet form. Topics in this Pilot include channel descriptions, piracy, safety, anchorages, cloud cover, local winds, humidity, temperatures, bridge and cable clearances, dangerous waves, currents, tide and water levels, prominent features, visibility, cyclones, storms, fog, precipitation, pilotage, towage, weather, ice conditions, wharf descriptions, dangers, routes, traffic separation schemes, small-craft facilities, and Federal regulations applicable to navigation. GENERAL INFORMATION This is a huge resource on the app with hundreds of useful links to Government, USCG, Wikipedia etc. Chapter 2. NAVIGATION REGULATIONS The complete online updated Code of Federal Regulations is linked in the app. Chapter 3. California, Oregon, and Washington Chapter 4. San Diego to Point Arguello, California Chapter 5. CHANNEL ISLANDS. This chapter describes the eight Channel Islands They include the four islands of the southern group-San Clemente, Santa Catalina, San Nicolas, and Santa Barbara; Chapter 6. Point Arguello to San Francisco Bay, California Chapter 7. San Francisco Bay, California. Chapter 8. San Francisco Bay to Point St. George, California. This chapter describes Bodega Bay, Tomales Bay, Noyo River and Anchorage, Shelter Cove, Humboldt Bay. Chapter 9. Chetco River to Columbia River, Oregon This chapter describes 200 miles of the Oregon coast from the mouth of the Chetco River to the mouth of the Columbia River. Chapter 10. Columbia River, Oregon and Washington This chapter describes the Columbia River from its mouth at the Pacific Ocean to the head of navigation above Richland, Chapter 11. Columbia River to Strait of Juan De Fuca, Washington This chapter describes the Pacific coast of the State of Washington from the Washington-Oregon border at the mouth of the Columbia River Chapter 12. Strait of Juan De Fuca and Georgia, Washington. This chapter includes the Strait of Juan de Fuca, Sequim Bay, Port Discovery, the San Juan Islands and its various passages and straits, Deception Pass, Fidalgo Island, Chapter 13. Puget Sound, Washington This chapter describes Puget Sound and its numerous inlets, bays, and passages, and the waters of Hood Canal, Chapter 14. HAWAII The Hawai'ian Islands an archipelago, consist of eight large islands, plus many islets, reefs, and shoals, strung out from SE to NW for 1,400 nautical miles in the north-central Pacific Ocean. Chapter 15. PACIFIC ISLANDS