I look to GoogleBooks and the advanced search feature of Amazon.com for running keyword searches and finding the research equivalent to a needle in a haystack. Did anyone in the 60s or 70s mention this one specific author or word? In a few seconds, you can find out. Unfortunately, between the two sites there are some big gaps: cheap paperbacks being one, and books that are too old to have been written in a digital format but too young to be in the public domain are another. In an attempt to cheaply bridge that gap for some research I was doing on yoga in the late 60s and early 70s, I started buying up cheap lots of books on yoga off of eBay and scanning through their indexes. I got some great hits for the research, but also scored some amazing, weird books.
I don’t know if Archie Bahm could have imagined that four decades later the world would be flooded by similar images.
-The Filled Slip