I was born in 1966 and my first recollection of Wackys was around series 4 or 5. I lived in a rural east TN town (still do), and my source for Wackys, other than trading with schoolmates, was three different mom & pop stores that were within a few miles of my house. I collected them through around series 10, then fell off for reasons unremembered. I consider collecting Wackys to be my very first hobby.
The 70s were awesome!