"Based on the original translation of 1927-30, translator not known, with revisions based on the 1980 German edition, with the addition of two articles: 'The total eclipse of the sun' and 'The zodiac through the ages'"_T.p. verso.
Anthroposophy and astrology by Elizabeth Vreede. ISBN 0952440393. Published by Anastasi in 2001. Publication and catalogue information, links to buy online and reader comments.