An official U.S. government manual on the fine art of preserving and restoring historic buildings includes practical techniques and guidelines from leading experts in their respective fields on repairing old windows, preserving barns, repairing stucco, repointing mortar joints, cleaning historic masonry, maintaining adobe, and other topics. Original.
This book is worth its weight in gold...not only because of the information it provides for many preservation challenges, but because it is in BOOK form. All of the preservation briefs are available on the National Park Service website, but during the government shutdown, they are completely unavailable. I am taking a preservation technology course right now, and I had purchased this book used at a library book sale. I could not be happier that I actually purchased this book, because it would be pretty tough to write my papers without it! Highly recommended if you can snag a used copy.