“Today, architects and building owners responsible for making improvements to post-war curtain wall buildings must balance multiple imperatives including energy code compliance, fire and life safety issues, and sometimes, change of building use. In many cases, heritage conservation is also a part of this complex riddle. [Preserving Modernism] is an invaluable reference for this undertaking with its wide array of case studies that provide examples of best practice and careful rehabilitation. These include all types of curtain wall assembles; including well-known and significant works of modern architecture. The detailed descriptions, accompanied by axonometric sections and photos illustrate clearly how the existing curtain wall system was upgraded in each case. The authors have made a very technical topic easy to grasp and interesting to read.” — Chandler McCoy, AIA, LEED AP | Getty Conservation Institute