Alofsin is internationally recognized as one of the world's leading authorities on the architecture of Frank Lloyd Wright and as an expert on modern architecture. In 2006, he received the Wright Spirit Award from the Frank Lloyd Wright Building Conservancy. The award honors an individual who, through artistic, architectural, scholarly, professional or other endeavors embodies the spirit of Frank Lloyd Wright. ' His pioneering study, "Frank Lloyd Wright: the Lost Years, 1910-1922", is acknowledged to be one of the most important books on Wright in the last forty years; the book was a winner in the monograph category in the American Institute of Architects International Book Awards. Alofsin's other publications include the five-volume reference work, "Frank Lloyd Wright: An Index to the Taliesin Correspondence", which won the Vasari Award of the Dallas Museum of Art.