Władysław Kozaczuk, Enigma: How the German Machine Cipher Was Broken, and How It Was Read by the Allies in World War Two, edited and translated by Christopher Kasparek, Frederick, MD, University Publications of America, 1984, ISBN 0-89093-547-5.
Leonard Bernstein | Leonard Compagno | Leonard Cohen | Leonard Nimoy | Sugar Ray Leonard | Elmore Leonard | Leonard Wood | Leonard Slatkin | Leonard Rose | Leonard Woolf | Leonard French | Leonard Feather | Fort Leonard Wood | Leonard | Nicolas Léonard Sadi Carnot | Leonard of Noblac | Leonard Adleman | Leonard Woolley | Leonard P. Guarente | Leonard Cheshire | Fort Leonard Wood, Missouri | St Leonard | Sheldon Leonard | Leonard Rossiter | Leonard M. Miller School of Medicine | Jacques Léonard | Fort Leonard Wood (military base) | Steve Leonard | Leonard Trelawny Hobhouse | Leonard Lewisohn |
:Ludomir Danilewicz - Polish engineer, one of the directors of AVA together with Leonard Danilewicz, helped to break the Enigma Code
AVA also won other clients, including the Polish Navy and Professor Lugeon of the Warsaw Meteoroglogical Institute, for whom AVA built, to his design, an atmoradiograf that registered disturbances in the atmosphere; this, Leonard Danilewicz later recalled, was the unheralded beginning of radioastronomy.