I started with Kodak MQ developer and Kodak Fixer packets that were available a year or so before they began marketing the Tri-Chem Packs. I read about them in some Kodak pamphlet I found at the photo store. The first paper I used was Velox. I didn't start enlarging until I was in high school, sometime around 1955. My first enlarging paper was Verigam. That was a long time ago.