From threads here, and information elsewhere, I've been able to figure out that there have been several print series of the Hostiles poster - from the original in 1902 to reprints in the 1920's (maybe), 1930's, 1950's, 1970's and maybe even later. Can anyone on here give a definitive guide to telling one series from the next? I think the community would greatly appreciate a listing of markings, size, paper stock, or whatever else can be used to figure out the age / authenticity of these incredible posters. Thanks