Allgemeine deutsche Biographie: 25:43 (Pachel, Leonhard)
Cosenza, M. E. Biographical and bibliographical dictionary of the Italian printers and of foreign printers in Italy from the introduction of the art of printing into Italy to 1800, 1968: p. 453 (Leonardus Pachel (Ingolstadiensis); Leonhard Pachel (of Ingolstadt); Leonhard Pachel (of Engolstadt); died in 1511; flourished in Milan from 1474 until 1511)