Post-Script: The wonder of these photographs is that some mystery remains. The top photo could have been from the African continent, not the South Pacific, while the other could be an Edith Street from another town besides Albuquerque. Perhaps we'll never know. Some of the prints I examined at the antique store did have hand-written captions on their reverse side, but most didn't. We now call this "metadata."
I suspect that I'll be making a much more careful examination of these kinds of ephemera when I next visit a thrift or antique store. Given their modest asking price ($1 and 50 cents, respectively), they're well worth collecting, as they pique my imagination.
Typecast via Olivetti Underwood 21.