Dr. Gary Berger has collected original publications, manuscripts, letters, and photographs of Albert Einstein for the past 3 decades. Dr. Berger is a retired reproductive surgeon who has published 170 medical articles and 12 books about reproductive medicine, including one book written for the general public.
Michael DiRuggiero owns The Manhattan Rare Book Company. He specializes in the history of science with an emphasis on original material relating to Albert Einstein. DiRuggiero was instrumental in the development of Dr. Berger's collection and created einstein.manhattanrarebooks.com that describes the items in the collection.
Hanoch Gutfreund is the academic director of the Albert Einstein Archives at the Hebrew University of Jerusalem where is also professor emeritus of theoretical physics and past President. He is one of the world's foremost Einstein authorities and has written several books about Albert Einstein and General relativity.