Ron: thanks to Dave Miles, I have some of Oscar's stuff on the Damascus Barrels album http://www.picturetrail.com/gallery/view?p=999&gid=16082038
My primary interest is in identifying the named damascus patterns, and the Belgian makers who produced the barrels used by US gunmakers.
Did Oscar have a file of London, Birmingham, Boston, Chine, Oxford, etc.? I'm especially interested in examples of 'Leclerc', 'Parisien', and named English damascus patterns. Thank you.

https://sites.google.com/a/damascusknowledge.com/www/home