File:Priestley National Historic Chemical Landmark Plaque.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	05:35, 23 December 2007		1,536 × 2,048 (1.97 MB)	commons>Ruhrfisch	{{Information \|Description= Plaque commemorating the designation as a National Historic Chemical Landmark by the American Chemical Society (ACS), on the Pond Museum at the Joseph Priestley House in Northumberland, Northumberland County, Pennsylvania, USA.

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Date and time of data generation	16:22, 22 December 2007
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File change date and time	16:22, 22 December 2007
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