Dr. Leonard Siever, a dentist, with a patient at his dental office, Pasadena, 1917-1933 Description: Dr. Leonard Siever, a prominent Pasadena dentist and socialite, was murdered on December 14, 1933 as he preparing to enter his parked car. The case was never solved. This image is from Dr. Siever's photograph album. Date: 1917-1933 Resource Type: still image Collection: Los Angeles Times Photographic Collection