Dutch author Nico Braas (1946-2022) had flying experience on many types of gliders. His main interest was aircrafts built as prototype or in small numbers. He owned a personal archive of thousands of images world-wide. Covering the period 1930 till today. He also had a collection of technical info and drawings of most aircraft types; and an impressive library of aeronautical books. A number of articles have been published in various magazines. Nico Braas is also the author of the Machtrainer book.