By Albert Frasca, Ph.D. & Robert Hill. The bible for .45-70 Springfield trapdoor collectors. This reprint was done to honor Robert Hill who was an outstanding Springfield collector, historian, researcher and gunsmith, plus a co-author with a wealth of information and experience with rare models. B/W photos and illustrations. Embossed cover. 8 3/4" x 11 1/2", 381 pages, hard bound.