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Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)
Made by a fabrication company in eastern PA, these had a similar look to the Garrison Stoves and were capable of burning hard coal or wood. An old advertising page is attached.
Models include the Pennfield 1 (wood-coal), the Pennfield 2 (wood only) and the Pennfield 3 (insert), although the majority of stoves actually produced and sold were the Pennfield 1 models.