A fascinating little notebook containing model drawings and detailed measurements of 24 patterns of Winchester pocketknives. Written on the front cover is, “First Line Winchester Pocket Knives. Developed for Manufacture. January 1st 1920 – April 1st 1922. Model Drawings, Models and Templets Finished.” Back in the 1970s, a page from this notebook was used to create the backgound for the cover of Blackie Collins’ book, “The Pocketknife Manual”.