Microfilm
Pair of compasses - Triangle - Book
Counting - Calculating machines - Contex
IBM
Binder - Compass - Paperclip - Pencil - Pen
Typewrtter - Calculating machine - Olympia
Calculator - DAP
Scryption - Writing
Calculator - Calculating Machine Company - Monroe
Post-it - 3M - Sticky notes - Sponsor 1988 Olympics
