Artillery projectiles, as North, Chase & North (Freedley, Philadelphia and Its Manufactures, 1857)
Philadelphia advertisement for Sharpe and Thomson, successors North, Chase and North, foundry, Second and Mifflin and North Second Street 1857
Philadelphia history in advertisements
Philadelphia as Advertised 
I have an 8 quart cast iron pot with Sharpe and Thomson Philadelphia in raised letters on the side. I’ve run in to many dead ends for info on this pot. Any info about when manufactured would be helpful. Thank you.
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I have an 8 quart Sharpe and Thomson cast iron pot. Did this company make cooking pots?
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Here is some information from PHILADELPHIA AND ITS MANUFACTURES, 1867: https://babel.hathitrust.org/cgi/pt?id=nyp.33433081787560;view=2up;seq=458;size=125
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