I’m very sad to report the daughter of one of our longtime members and contributors Dave Wall of City College of San Francisco, Elender Wall, passed away last Monday evening from complications of thyroid cancer. She was 47 years old. Dave was well-known for his demos that involved magic tricks, and years later his daughter Elender joined our ranks. Despite her musical training in voice at the San Francisco Conservatory of Music, she degreed in physics and went on to edit and distribute Dave’s textbook Introductory Physics: A Problem-Solving Approach.