Daily Book Graphics #4 / Computers at Work

These images come from Computers At Work, A Grosset All-Color Guide, by John O.E. Clark, ©1971, Grosset and Dunlap, Inc., The illustrations are by Whitecroft Designs. This book has tons of interestingly dated illustrations explaining primitive computer networks. I found a Flickr set of illustrations from a slightly earlier edition of the book here.