Four print matches....much easier now with digital cameras and computer programs. The first one I did back in '84 was done using an enlarger in a dark room. Placement of the negative had to be precise as well as the trimming once the photos were printed.
This was my first four print match done in grade 9 photography class back in '84. My teacher loved it so much he told me for years after that it was his favourite one. Once he told us what a four print match was, I figured everyone would have done them of trees. Apparently not! I stood under this weeping birch and took the picture looking up.