There were plenty of blends available. Back in the early 1970s, when I was still at Michigan State, Campbell's in East Lansing (which is still in business) had four shelves along one side of the shop - at least 6 feet long - loaded with tins. There were others inside an old cabinet, plus the house blends. Not like today, but there were certainly 150 blends available in his store. And he did not carry the American blends, Amphora, Sail, Troost, or MacBaren, and the other European pouch blends that I don't recall. The drugstore in the shopping center just off campus probably had another 75 available.