But, if you MUST know, preserve her by seeking an answer from outside sources.
Largely, the fun in collecting vintage sewing patterns is determining their historical context and dating them, that is, if you're a nerd like me. The collective knowledge and contributions of the online sewing community increasingly help narrow and expedite this process. There are fantastic pattern dating lists of tips, clues and identifying marks here, here, and here, for example. However, when it comes to mail order patterns, my MOST FAVORITE way to date: ONLINE NEWSPAPER ARCHIVES. For example, a recent acquisition sent me searching for the ages of Miss Marian Martin...
and Miss Anne Adams
Isn't it amusing to read the advertisments?! It's a wonderful glimpse into the past. This method is definitely NOT without fail, but, in my humble opinion, it's the most accurate, fascinating and entertaining was to archive a mail order collection! Have you ever searched for or dated your pattern collection this way?