About the Author

E. Leroy Tolles is a structural engineer with ELT & Associates and was principal investigator for GSAP. Edna E. Kimbro is an architectural conservator and historian specializing in the preservation of Hispanic-era buildings and material culture. Frederick A. Webster is a civil engineer who specializes in design, repair, and retrofitting of historic buildings. William S. Ginell is a senior conservation research scientist at the Getty Conservation Institute and was project director of GSAP. Tolles, Webster, and Kimbro are coauthors, with Anthony Crosby, of Survey of Damage to Historic Adobe Buildings after the January 1994 Northridge Earthquake.