I thought that when I made my map I might catch two or three errors in distance or geography.
Hah! NINE. Nine mistakes when people head east from Oklahoma and wind up in Texas, or veer from north to south without explanation.
I also printed calendars for every month from September 1930 to April 1931, to check if all the “three days later it was Saturday” references were correct. There were two months I had to back up, re-chart, and revise because I was a day (or a week) off.
About the only thing I got right were the phases of the moon. The moon was a sliver on the prescribed sliver day, dark on new moon days, full when it was supposed to be. I have no idea how I managed that when I had the “three days later” narrative so wrong.
That’s all tidy now. Only 12 revisions left!