In reading around outside of books and regarding the cast hilts while on a Widmann expedition, I came across a recent public uploading of a Man At Arms August 2010 article. It is in two parts and is in general reference for U.S. Marines swords but ancillary to the current discussion. It is in two parts but relates a good bit of early Philadelphia sword making. These perhaps a good bit later but the German/Prussian connections and ties are still there throughout Widmann and Horstmann operations.
www.bcadapa.org/smullen1-sm.pdf
www.bcadapa.org/smullen2-sm.pdf
A pair of 1788 type swords had come my way from Stanley a year of so ago. I forwarded the links to Mark at Old Swords and they should be listed there now as well. you may have to register for the articles section.
http://www.oldswords.com/resources/articles.php
This seems to be a happy lot of Pa folk. Dealers and collectors.
http://www.bcadapa.org/
Cheers
GC