I've tried to find information on the red grease pencil markings, and have had no luck. I'm seeing it, interestingly coupled with chiseled numbers, on the Parsonage where I'm working now, and it dates to 1821.

My mention of pencils was about the domestic production of them beginning in 1812, in response to the market being cut off by the war and the Blockade.

"We build too many walls and not enough bridges" - Isaac Newton

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