Lifelong resident of Philadelphia. Retired mechanical engineer.
Articles created edit
New articles I have started are listed on this page.
Images contributed edit
Images I have contributed, mostly harvested from U.S. Government sources, are listed in this page.
Articles in utero edit
Articles I'm working on starting are in my sandbox.
Articles in progress edit
I am trying to improve or start articles here:
Useful links and tools edit
Useful links and tools I've collected may be found here.
 | This user lives in or hails from Philadelphia. |