This fashion photographer captured America’s forgotten workforce. 40 years on, the portraits are on view again

By Leah Dolan, CNN London (CNN) — In 1979, photographer Richard Avedon packed up his antiquated Deardorff camera, jumped in a Chevy Suburban and drove across Texas, Montana, New Mexico, North Dakota, Colorado, California and 15 other American states, hoping to capture an essence of the regions through the people who lived there. These were