Magnetic and Paper Tape 
Early tape cannister.
Early tape cannister.

Early tape cannister locking system. Required locating tabs in cover into slots in back.
Early tape cannister locking system. Required locating tabs in cover into slots in back.

Later tape cannister.
Later tape cannister.

Later tape cannister locking system. Cam in cover squeezed rubber ring, expanding it to seal in the hole in the back. Did not require precise positioning. Note rubber perimeter seal in bottom half.
Later tape cannister locking system. Cam in cover squeezed rubber ring, expanding it to seal in the hole in the back. Did not require precise positioning. Note rubber perimeter seal in bottom half.

2400 foot tape with tape seal. Using seals, tapes took less space. Seal had a hook for hanging in racks. Wrightline made a fortune.
2400 foot tape with tape seal. Using seals, tapes took less space. Seal had a hook for hanging in racks. Wrightline made a fortune.

IBM 3480 tape cleaner plus a normal cartridge. This model came after the 3420 open reel style.
IBM 3480 tape cleaner plus a normal cartridge. This model came after the 3420 open reel style.

Black paper tape. No idea for what.
Black paper tape. No idea for what.

Tape held 202 cyls of 3330 data and was transferred to 3330 when data was needed. Programs did not access this piece directly. See 

http://www-03.ibm.com/ibm/
history/exhibits/storage/
storage_3850.htm
Tape held 202 cyls of 3330 data and was transferred to 3330 when data was needed. Programs did not access this piece directly. See

http://www-03.ibm.com/ibm/
history/exhibits/storage/
storage_3850.htm

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