Postcards are ex estate that had a lot of New Zealand ephemera, so possibly NZ. I also did a google search for The Hearty Sons of Toil Potatoes and the 1908 Otago Witness newspaper came up in the search. It was over 80 pages so I didn’t read it. One of the men photographed has an X marked over his head in two photo’s. The last photo see’s them all in suits !! Ineresting.