I did a quick search earlier today looking for vixen files. I
blundered onto this firm that mostly focuses on sheet metal. They
started after WWII, recycling surplus materials at an old Beechcraft
factory. 

Anyway, they have a great selection of files. Has anyone done business
with them? 

https://www.yardstore.com/nsearch/?q=files

Regards, Gary Katsanis
Albion New York, USA