Archival storage

... Back in the late '60s I remember seeing a unit from IBM that used film storage. The film was a small rectangle, maybe 1" x 2-1/2". These were stored in magazines of some sort, IIRC. They could be individually selected randomly. I have one of the film rectangles somewhere. When I run across it again I will post a link to an image. In the mean time, does this ring a bell with anyone? I can't remember a model number or anything, so perhaps it was a proof of concept or something. I was working at Baylor Medical in Houston & they had a pretty good in with IBM. We had all manner of strange devices installed on a 360/50 from time to time. We even had one of those noodle snatchers in for a while. I also remember when we got our first megabyte memory - called a Large Core Storage. It was from Ampex and was about the size of a refrigerator - maybe a little deeper. There was a visible stack of core planes about 4' tall inside it. Gil