The Elmer Belt Library of Vinciana is a special collection at the University of California, Los Angeles which focuses on Leonardo da Vinci-- life, art, thought, and enduring cultural influence. It is the most extensive research collection concerning Leonardo in the United States. It was donated to UCLA in several installments between 1961 and 1966 by Dr. Elmer Belt (1893-1980), an internationally recognized urologist; a pioneer in gender affirmation surgery; a strong supporter in the founding of the UCLA School of Medicine; an important public health advocate; and a lifelong bibliophile and book collector.