I'm looking for a book I borrowed from my last workplace a while back. I'm not really looking for the book, only a reference in the book (the author makes references to a US stencil company or similar) which I'd really like to research for my next project. I think the book was dated around 1950, and was aimed for students on typography.

I've searched amazon and archive.org for the book, but I can't seem to find exactly what I'm looking for.

I have two pictures from two different pages in the book, and I'd love if someone could ID the book or give me some info on the reference I'm after.

Christian

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