From publisher blurb:
Complete Core Rules: Year 1901 contains the complete Steamfortress Victory RPG main book anthology. It is the first ever anthology of all three e-books: Core Mechanix, Engineer's Manual, and World of Steamfortress Victory. It has everything required to develop and play a roleplaying campaign set in a steampunk world and then some! This book also marks the ending of the Pre-1900 beginning story arc, and begins the 1901-1909 story arc entitled the Timewelder Schism.
The New Century Truce officially ended on New Year’s Eve 1901 which means that the cease fire between the Five Nations is over. No one knows exactly what this means for the fate of America, but it clearly gives the Unified States an open window to reclaim Chicago from underneath the wreckage of the Victory. In the meantime, the Time Traveller gathers allies to join him in putting an end to madness of his former student Consul Phillip Silverhorn. There are many uncertainties in the Five Nations in 1901, but one fact is clear...
War is Coming. Advance or Be Destroyed!