I know an ol hippy that smoked in the late 60's and 70's, he says over all, the bud has gotten alot better, but you could still occasionally find some that was pretty much as strong as the really good stuff is today. He would tell me these stories about this dealer/friend of his that everybody called wildman, (or animal, somthing like that) who would occassionally bring big sticky donkey dick sized buds over. So if you had the right connections back then, you could still get good shit.

I think the main reason most of the weed we have today is so potent because alot more people know how to grow good bud today than they did back then. Back then it was mostly a bunch of amatures lookin for a quick buck. Now its become a competitive buissiness, handled mostly by people who know their shit. Not to mention, even amatures these days have alot more of resources for learning how to grow bud than they would have had in the past.