Amazon.com sells a number of books that show how to find common, edible plants including "The Forager's Harvest," by Samuel Thayer and "A Field Guide to Edible Wild Plants," by Lee Allen Peterson. Both books contain illustrations and pictures.
"The Forager's Harvest" is highly reviewed with 4.6 stars out of 5 stars. It was the winner of the 2006 Midwest Book Award, and it includes more than 200 color photographs.
"A Field Guide to Edible Wild Plants" is highly reviewed, too, with 4.5 stars out of 5 stars. It describes more than 350 different plants and has over 75 color photographs and 400 drawings of plants. The book also shows readers how to look out for poisonous plants that may look like safe ones.