Postmarks: Once Upon a While, November, 2017

Here’s the link to our YouTube video covering this topic: https://youtu.be/-hTDD-EMM_U

Download the spreadsheet I mentioned in the video here: https://docs.google.com/spreadsheets/d/1zVLsV0Tcksm0tDpp7azzVgsCrFn7K03Y9qZEBC8_u4I/edit?usp=sharing