Volume 1 has the most numbers of Krags, and probably trapdoors, though one of the others (2?) has a lot of TDs. Frank was a Krag collector, and V1 represented his whole database up to then. Quantity fell off as time passed. Some time, when my books are available, I'll try to remember to count the pages on some of the guns. V2/3/4 are printed in considerably larger type than the horrible font used in V1.