Dear Mimi, I cannot tell you how saddened I was to hear that Doug passed away. He was, as you know, my mentor, my role model, and my friend. Even after I left astronomy for many years, I always thought of Doug, and always very fondly. His friendly, supportive, and relaxed manner belied a very deep intelligence, and a curiosity and love of both science and teaching. He will always be one of my role models and my friend. The many students, faculty, colleagues, and friends upon whom he left a very positive indelible mark, will miss him greatly.