John Patten GuthrieJohn Patten "Pat" Guthrie, AIA, is principal of John Pat Guthrie Architects, Inc. He has been a licensed architect in 13 states, and the author of Architect's Portable Handbook, now in its third edition, and Cross-Check: Integratin Building Systems and Working Designs, as well as the first edition of the book, Interior Designer's Portable Handbook. Read More Read Less