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- Collector's Editions
Rescue in extremis
Mono "full track" recording
2 track stereo recording
Chemical degradation of an original master tape from 1961
Master tape from 1981
Tapes preserved after hub replacement
Original master tape from 1979
Original master tape from 1955 (before)
Original master tape from 1955 (after)
Original master tape from 1964 (before)
Original master tape from 1964 (after)