Since neither Federal League Park in Indianapolis nor Harrison Park in Harrison, New Jersey, the two parks this franchise played in, are in the WIS database, I will put them in the Polo Grounds, as close geographically to Newark as possible. Hope no one objects.
Anyone else playing a franchise that has no ballpark, let us know where you propose to have them play, but try to be as close geographically as possible (maybe the Lousville team can play in a Cincinatti stadium for example).