This poster expansion is one of six expansions included on a single poster of expansions explicitly for the boxed edition of Wabash Cannonball and Texas & Pacific from Rio Grande Games. This expansion includes one Erie Railroad stock, one Erie Railroad treasury, and 14 brown counters.

Similar to the Wabash, the Erie can only be capitalized after another railroad reaches a destination (Cleveland, Youngstown, Wheeling, or Charleston). The Erie has unique building privileges for New York. This expansion changes the game end conditions.