Collector's Guide to the Balmat Mining District by Steven C. Chamberlain, Marian V. Lupulescu, David G. Bailey, William F. deLorraine, and George W. Robinson. Schiffer Publishing, 4880 Lower Valley Road, Atglen, PA 19310. 2018; 128 pages; $34.99 plus shipping and handling (hardbound). Issue 2 (4th March 2019) - Cook, Robert B.