Circa 1922. Reprint. Paperback. 7pp. Very thin small quarto [25.5 cm] Tan and black printed wraps. Very good. The covers are slightly darkened. There is a strip of paper covering 3/4 of the folded spine. It may have been an amateur repair. Item #24525
Reprinted from Popular Astronomy, Vol. XXX, No. 9, November, 1922. With plate XXXI, Venus Photographed by Rordame.