Thanks for your comments so far. I have photos, but can't post them here yet as I'm new to the forum. However, I have made a Dropbox link to them here:
https://www.dropbox.com/sh/vuyu76qsekksqa4/AACtNe8O2b1T-BBotbPM5NO7a?dl=0
In the hall, about 12 inches to the left of the living room door...