Text engl. - Other edition: First edition: New York 1993. First Dover edition 1973. - Dover editions are often not marked with their year of publication; only the date of the first edition is mentioned, and younger editions may be discovered by the higher price mark on the book’s back.

Text engl. - First ed. New York: The Literary Guild 1934, vii, 339 p, 32 pl.

Text engl. - Enthält zahlreiche Einzelbeiträge, die hier nicht aufgelistet sind.