Great info, and it seems likely that “Bonnie Brae” is the spot we are looking at on the map, and perhaps, the spot we are looking at on the map is the house pictured in the postcard, but we aren’t sure.
I’d love to find a wider pic that includes that house.
I’ve looked for 1940s tax photos, but alas, quite a few areas of Riverdale are missing and this seems to be one of them.
I’ve looked at aerial photos, but the best I can find are blurry or tree covered at that particular spot.
I took a quick look at this great old footage, but the Hudson River section seems to start just north of where we are looking.
On the positive side, if that is not the spot, I can’t come up with a better one.
Just like to be sure the we are clear we are guessing, and haven’t backed up the guess yet, even though it may be a good one.