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below: letter from d.c. sonnischen, parachute club of america to harlan anderson, october , and photograph of pdp- tent at the sixth world sport parachute championships. this innovative use of the pdp- , demonstrating its portability and versatility, was no doubt one of the first instances of computerized
below: letter from d.c. sonnischen, parachute club of america to harlan anderson, october , and photograph of pdp- tent at the sixth world sport parachute championships. this innovative use of the pdp- , demonstrating its portability and versatility, was no doubt one of the first instances of computerized...
https://gordonbell.azurewebsites.net/digital/timeline/pdp-1story.htm