Rob Neyer at ESPN pointed out this article in Sports Illustrated about the popularity of steroids. It includes the following quote:
Are anabolic steroids widely used by Olympic weight men? Let me put it this way. If they had come into the village the day before competition and said we have just found a new test that will catch anyone who has used steroids, you would have had an awful lot of people dropping out of events because of instant muscle pulls."
This article was published in 1969.
Something to consider next time Bud Selig refuses to take any responsibility for steroids or (seemingly) anything else.