Probably a long shot but have you used the camera memory card(s) since? If not you might be able to recover some of the pictures from them even if you've deleted them.
That's a very good point.
With memory cards at the low prices they are these days, especially when compared with what I / we used to pay for 36 Kodachrome slides 40 years ago, I find it almost as easy to start with a new card when the current one is full.
The problem is keeping track of the little beggars - and their identity. They are very easily lost in the bottom of the gadget bag, or some compartment thereof. I swear that there are still secret pockets in my Lowepros that I have yet to discover.
I never had that problem with a roll of 120 format FP4 in the days of yore ...
Whoops - this is
not a photography forum is it ...... Back then to computers.
regards,
FOR