It's been a while since I looked at these. In fact, I had trouble finding the scans because I had them listed as St. James, Barbados. Not sure why.
In the back of my mind, I had them associated with Aruba / Bonaire area. Bud Sweet in particular. Possibly Jake Kozloff and Clifford Jones.

Two things...
Anybody have an idea or speculation of who these were produced for?
And if you have one for sale that's not shown, I'd be very interested.

Thanks,
Pete