Sorry, didn't realised my post had error, so let me re-phrase it:
I'm writing an article about IRWIN auger bits, with a focus on early ones: from 1885 to 1920's.
The article is a work in progress and is available online, but as i'm a new user, i cannot have URLs in my post :crying:
This article is for collectors who want to identified how old are their Irwin auger bits, there's a section about box/cases too.
I'm looking for people who would have old catalogues and are willing to share information.