Pruett, J. Hugh (April 1939). "Far Western Activities of the American Meteor Society". Publications of the Astronomical Society of the Pacific. 51 (300): 99–104. Bibcode:1939PASP...51...99P. doi:10.1086/125012.
Pruett, J. Hugh (April 1939). "Far Western Activities of the American Meteor Society". Publications of the Astronomical Society of the Pacific. 51 (300): 99–104. Bibcode:1939PASP...51...99P. doi:10.1086/125012.