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«1977 United States Environmental
Protection Agency
Graphic Standards System

Designed by Steff Geissbühler,
Chermayeff & Geismar Associates

The EPA Graphic Standards System is one of the finest examples of a standards manual ever created. The modular and flexible system devised raised the standard for public design in the United States.

The book features a foreword by Tom Geismar, introduction by Steff Geissbühler, an essay by Christopher Bonanos, scans of the original manual (from Geissbühler’s personal copy), and 48 pages of photographs from the EPA-commissioned Documerica project (1970–1977).»

https://standardsmanual.com/products/epa A photo that shows part of a page from the EPA Graphics Standard System, it includes some nice black and white geometric patterns.