Lifelong resident of Philadelphia. Retired mechanical engineer.

Articles created

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New articles I have started are listed on this page.

Images contributed

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Images I have contributed, mostly harvested from U.S. Government sources, are listed in this page.

Articles in utero

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Articles I'm working on starting are in my sandbox.

Articles in progress

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I am trying to improve or start articles here:

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Useful links and tools I've collected may be found here.

 This user lives in or hails from Philadelphia.