[Monthly. Text and illustrations on front and back cover].
Notes:
[Monthly. Text and illustrations on front and back cover]. * For Sale by Superintendent of Documents. Paper, 10c. single copy, $1.00 a yr.; foreign subscription, $1.40.
Availability:
* For Sale by Superintendent of Documents. Paper, 10c. single copy, $1.00 a yr.; foreign subscription, $1.40.