For years, Bruce Hellerstein kept his baseball memorabilia in his Centennial basement, but two and a half years ago he turned his collection into the nonprofit B’s Ballpark Museum at 1940 Blake St. near Coors Field. The museum is open Saturdays, noon – 6 p.m., by appointment and two hours before all Rockies home games. Admission is $5. Hellerstein is seeking more baseball-loving volunteers to help maintain the museum’s hours. Photo by Peter Jones