Jack Guttentag, 100, professor emeritus of finance at the Wharton School, died on February 6. Dr. Guttentag, a native of Brooklyn, NY, obtained his bachelor’s degree from Purdue University and earned his master’s and doctoral degrees at Columbia University. During World War II, he served as an Army artillery spotter, then as chief of domestic research at the Federal Reserve Bank of New York. In 1962, he joined the Wharton School faculty, where he dedicated his research to reform and innovation in banking, monetary policy, and housing finance. Alongside fellow faculty member E. Gerald Hurst and Allan Redstone WG89, he co-founded GHR System Inc., a financial services provider for the mortgage and consumer banking industry. After retiring in 1996, Dr. Guttentag published The Pocket Mortgage Guide in 2003 and gained recognition through his website, “The Mortgage Professor,” and his nationally syndicated advice column, “Ask the Mortgage Professor.” Dr. Guttentag is survived by sons Bill C79 (Marina W81) and Adam C80 M85 (Susan C81); grandchildren Misha, Sasha, Rebecca, and Benjamin; and great-grandson Micah Jin Kim.