Though not as well known as their contemporaries the New York Knickerbockers, the Eagles Base Ball Club were pioneers of the sport of baseball. The team inhabited the same hallowed ground as the Knickerbockers, the Elysian Fields in Hoboken, NJ, and the two clubs often played one another. Like the Knickerbockers, the Eagles were one of the first baseball teams ever assembled in New York and America at large. This magnificent poster commemorates the 18th anniversary of the early Manhattan-based baseball team, advertising a game played at Landman's Hamilton Park on Friday 25, 1871, and stating that "dancing will commence at 2 P. M." The poster, featuring a very early scene of baseball at its center, was printed by Palmer & Corse and is framed to 31x44" (the poster itself is 28x42"). It was obtained directly from the family/descendants of Henry Bellows, the Treasurer of the Eagles Base Ball Club, and Bellows' name can be found on the broadside. The rarity of this offering cannot be understated. There is only one other example of this poster known to exist and it resides at the National Baseball Library. The icing on the cake is that this one is in EX condition overall. This is an unparalleled opportunity to obtain an awe-inspiring piece of memorabilia from the earliest days of baseball in America.