Thanks for the idea. The box was unchecked by default but it didn't work, however, it gave me an idea to try something else which partially worked.
What I did was to change to the folder type for "My Photographs" to "General Documents." Then I could set that view differently from the view of the folders below which were still set at Photo type folders with that tic box unchecked. This worked for retaining the different settings but only when working directly with the folders themselves. I see now that the problem is with the "Library" system. The library system doesn't seem to allow different view settings within various folders grouped into a single library. The absence of ability to customize this is, imo, a huge defect in design for this new library system of organization.
I thought the library system could be very useful and helpful in certain situations but it also seems to add a layer of possibly unnecessary complexity and confusion to the organizational layout. I haven't decided yet whether it is worth keeping the library thing operational or not (assuming there is a way to disable it). I guess I'll just give it some more time to see if it turns out to be more useful than not.
In the meantime, if anyone comes up with a way to change and retain different folder views for various folders within a single library, I'd be most interested in hearing the details.