Site author owns and recommends the books listed below:
Kallas, John (2010) Edible Wild Plants Wild Foods From Dirt to Plate
Thayer, Samuel (2006) The Forager's Harvest
Thayer, Samuel (2010) Natures Garden
Thayer, Samuel (2017) Incredible Wild
Zachos, Ellen (2013) Backyard Foraging 65 Familiar Plants You Didn't Know You Could Eat
Boutnenko, Sergei (2013) Wild Edibles A Practical Guide to Foraging
Gibbons, Euell (1962, 1987 ) Stalking the Wild Asparagus
Elpel, Thomas J. (1996, 20018) Botany in a Day The Patterns Method of Plant Identification
Consider reading the first eight above first. /\ /\ /\
Gibbons, Euell ( 1966, 1972) Stalking the Healthful Herbs
Gibbons, Euell (1966, 1971) Stalking the Good Life
Gibbons, Euell (1973) Stalking the Faraway Places and Some Thoughts on the Best Way to Live
Medsger, Oliver Perry (1939, 19,49, 1963) Edible Wild Plants x2
Gilmore, Melvin R. (1914) Uses of Plants by the Indians of the Missouri River Region
Meuninck, Jim (2013, 2018) Edible wild Plants and Useful Herbs
McFarland, Joe (2009) Edible Wild Mushrooms of Illinois & Surrounding States
Cowan, C. Wesley, Watson, Patty Jo (1992) The Origins of Agriculture An International Perspective
Stephenson, Karen (2017) A Survival Guide to Winter Foraging
Stephenson, Karen (2020) Edible Wild Plants Pictorial Guide
Stephenson, Karen (2012) Fields of Nutrition
Rinella, Steven (2020) The Meateater Guide to Wilderness Skills and Survival
Duke, James A. (1997) The Green Pharmacy
Hillcourt, William (1979) the Boy Scout Handbook
Krebill, Mike (2016) The Scout's Guide to Wild Edibles
Brill, Steven (1994, 2002) Identifying and Harvesting Edible and Medicinal Plants
Haines, Arthur (2015) Ancestral Plants Volume 2
DK Publishing (1989, 2002, 2011, 2019) Encyclopedia of Plants and Flowers
Facciola, Stephan (1990) Cornucopia A Source Book of Edible Plants
Moerman, Daniel E. (1998, 2019) Native American Ethnobotany
Lincoff, Gary (2012) The Joy of Foraging
Angier, Bradford (1956, 1984, 2001) How to Stay Alive in the Woods
Little, Elbert (1980, 2008) National Audubon Society Field Guide to North America Trees Eastern Region
Martin, Daniella (2014) EDIBLE
Kindscher, Kelly (1987) Edible wild Plants of the Prairie
Coon, Nelson (1957, 1969) Using Wayside Plants
Kirk, Donald (1970, 1975) Wild Edible Plants
Forey, Pamela (1989) An Instant Guide to Edible Plants
Peterson, Lee Allen (1977, 1999) Field Guide to Edible Wild Plants: Eastern and Central North America
Black Dog and Leventhal Publishing (2007, 2017) Survival Wisdom and Know-How
Wiseman, John (1986, 2009) SAS Survival Handbook
Sturtevant, Edward Lewis (1919) Sturtevant's Notes On Edible Plants
Springmeyer, Fritz (1996) Willow Bark and Rose Hips An Introduction to Common Edible and Useful Wild Plants of North America
Jarvis, D.C (1958) Folk Medicine
Foster, Stephen (1994) Peterson Field Guides Venomous Animals & Poisonous Plants
Muenscher, Walter Conrad (1939, 1975) Poisonous Plants Of the Untitled States