Hockey prompt

As we speak, I am literally reading a book about the history of NHL expansion. As a Wings fan, I've always been interested in learning about the Original Six era, and there's just so much in general that I think us "younger" fans (including me as I near 40) don't realize, especially about things we think are more recent concepts. Examples: Detroit is technically a relocated franchise, as the entire original roster of the Detroit Cougars was purchased from the Victoria Cougars of the WHL... and they actually played their first season in Windsor. Montreal was the first city to have two franchises, as first the Wanderers and then the Maroons came and went as more anglophone teams in the city (the famous Montreal Forum was actually built for the Maroons), and even the Canadians nearly decamped to Cleveland(!) during the Great Depression. New York also had two franchises early on, with the New York Americans came first and played in Madison Square Garden, until the Rangers arrived and took over the arena; the Americans briefly attempted to rebrand/relocate to Brooklyn before folding entirely. In short, the league was kind of a mess in the early years and the "Original" Six is actually just the time when things stabilized before expansion and relocation begin anew.

(And let's never forget that the entire purpose of founding the NHL was to spite Toronto.)