"Pennsylvania Railroad B6"@en . "1902Z"^^ . "6"^^ . . . . "The Pennsylvania Railroad's class B6 was its most successful class of switcher, or as the PRR termed them, \"shifter\". The PRR preferred the 0-6-0 wheel arrangement for larger switchers, whereas on other roads the 0-8-0 gained preference. The PRR used road locomotives, generally 2-8-0s, when larger power was required."@en . "1902Z"^^ . . .