Petermann's planet : a guide to German handatlases and their siblings throughout the
world, 1800-1950 : vol. 1 : the great handatlases / Jürgen Espenhorst ; edited and
translated from the German text by George R. Crossman ; preface by Ronald E. Grim.-
Schwerte, Germany : Pangaea Verlag ; Falls Church, VA : Pangea USA, 2003-