I had not heard of Ed Ruscha until I read the article "Critics Notebook: Ed Ruscha's revolutionary moment in street photography" in the March 27, 2011 edition of the Los Angeles Times "Arts and Books" section - interesting information in regards to the evolution of landscape photography. "Ed Ruscha: On the Road" opens at the Hammer Museum on June 11, 2011 - too late for the museum report!
http://www.latimes.com/entertainment/news/la-ca-ruscha-notebook-20110327,0,4998101.story
Here are some images that support the article:
Garry Winogrand
Jerry Berndt