My girlfriend recently showed me a 1908 yearbook in which several women are marked as playing "Poos-ball" or "Poosball." An internet search for this reveals mostly misspellings of "Foosball," however, if the search is specific enough, the most common relevant results lead back to this same high school in Cincinnati.
And, a photo of the "A grade Girls' Poos Ball team"! http://imgur.com/6kXWq19
The question, of course, is what is Poos Ball? By the ball size, seems like soccer, volleyball, basketball, and water polo are the best bets. All four were invented prior to 1908, though the latter three sports would have been relatively new. However, there is no mention on the internet of any of these being formerly named Poosball! Thoughts?