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