Anyone who wants to chase this is more then welcome, from time to time I take a shot at it but always come up empty. I've not looked at the info in years but they started making bullets in 1914 under private contract (no idea who) then started selling to the public about 1920. A Mr. Colton was in charge at one time.

P.O. Box 856 is the only one I have ever seen.
1936 Letter signed by A. Martin
1939-1949 Letters signed by V. Clark


http://alamedaconnection.com/pages/Businesses/view/1339/printable/1

I have several catalogs and price list as well as a few boxes of bullets.

MP Sadly Deceased as of 2/17/2014