I'm guessing that would be one of the old reel to reel tapes. I think the hardest part (assuming the tape is intact) would be finding a working tape reader. From pictures I've seen I think those were real beasts, in cabinets as large as the mainframe itself. The Computer History Museum in Mountain View CA is one of the few places that might have one.
Otherwise you might be able to build your own tape reader. You could probably make it a lot smaller and simpler than the original machines since throughput wouldn't really be an issue. Still it would probably be quite an engineering project.
Otherwise you might be able to build your own tape reader. You could probably make it a lot smaller and simpler than the original machines since throughput wouldn't really be an issue. Still it would probably be quite an engineering project.