from the introduction:
In the darkest and coldest periods of the year the folk of the Empire gather for ceremony, celebration and festivities. This occurrence is almost universal across the Old World but especially here in the Empire do we resist the gloom of winter with such fervor. The need to defy the dark and celebrate that the worst is over inherent in all intelligent life has intrigued and confounded me for several years and after many winters of field research I am ready to publish this short leaflet, summarizing my findings of the many different winter traditions throughout the Empire. A more complete book, describing the winter ceremonies of the whole old world, is to follow this limited leaflet. The following is a list traditions, ordered from most common to least common.
user note:
This supplement is not rules specific and could be used with any ruleset using the Old World setting.