She also wrote novels for teens and was twice a Newbery nominee in the 1970s. As you'll see, she wrote two other culinary books.

Apparently, she committed suicide, but I can't find a full obit. Here's what I did find:

Local author, professor Katie Letcher Lyle dies | The News-Gazette
http://www.thenews-gazette.com/conte...r-lyle-dies?fb...
Aug 25, 2016 - Katherine "Katie" Letcher Lyle, 78, of Lexington, author of more than 20 books, died Wednesday, Aug. 24, 2016. Lyle's books reflected her wide ...

http://katieletcherlyle.com/index.php
(her site)

http://www.goodreads.com/author/show...e_Letcher_Lyle
(reader reviews and covers)


WRITINGS BY THE AUTHOR:

(With Maude Rubin and May Miller) Lyrics of Three Women, Linden Press (New York City), 1964.

I Will Go Barefoot All Summer for You (young adult), Lippincott (Philadelphia, PA), 1973.
("Chronicles the experiences of a thirteen-year-old girl during the summer she falls in love for the first time.")

Fair Day, and Another Step Begun (young adult), Lippincott, 1974.
("Convinced of the rightness of her love, a pregnant sixteen-year-old follows the father of her child when he runs away from her.")

The Golden Shores of Heaven (young adult), Lippincott, 1976.

Dark but Full of Diamonds (young adult), Coward (New York City), 1981.
("In love with the woman his father also loves, a sixteen-year-old has trouble accepting their impending marriage.")

Finders Weepers (young adult), Coward, 1982.
("During a visit to the home of her dying grandmother in the Blue Ridge Mountains, Lee happens on a famous lost treasure which may prove unlucky for herself as well as for others.")

Scalded to Death by the Steam: Authentic Stories of Railroad Disasters and the Ballads That Were Written about Them, Algonquin Books (New York City), 1983.
The Man Who Wanted Seven Wives, Algonquin Books, 1986.

The Wild Berry Book: Romance, Recipes, and Remedies, North Word (Minocqua, WI), 1994.
(Editor with Roger Jeans) Letters from Peking: The Wartime Letters of U.S. Marine Captain John Seymour Letcher, 1937-1939, U.S. Marine Corps Historical Society, 1996, Ohio University Press (Athens, OH), 1998.
The Foraging Gourmet, Lyons & Burford (New York City), 1997.
When the Fighting Is All Over: The Memoir of a Marine Corps General's Daughter, Longstreet, 1997.

The Complete Guide to Edible Wild Plants, Mushrooms, Fruits, and Nuts: Finding, Identifying, and Cooking, 2004


More later...

https://www.jstor.org/stable/816397?...n_tab_contents
(part of an interview from 1980)

https://www.google.com/?gws_rd=ssl#q...er+lyle+kirkus
(three Kirkus reviews of her YA novels)

http://www.ohioswallow.com/author/Katie+Letcher+Lyle
(a couple of history books)

http://maisestudio.com/rock/viewtopi...=168&start=160
(this is why I assume it was suicide)

https://www.google.com/?gws_rd=ssl#q...r+lyle&tbm=vid
(videos - I don't know if she appears in any)

http://www.imdb.com/name/nm2453284/
(tiny film resume)

More titles not listed above:

https://www.smashwords.com/profile/view/katielyle

11. WHEN THE FIGHTING IS ALL OVER: a memoir (Longstreet, 1997) (Ingram Pick of the Season, 1997; short-listed by The Virginia Center for the Book for best non-fiction book in Va., 1998)
12. GOODBYE TO OLD PEKING, ed. with Roger Jeans (Ohio U Press, 1997). American USMC letters from China, 1936-1939
13. FREE MEL GREENBERG (a musical comedy) with Richard B. Sessoms. @ 1996. New York preview November 1999. Professional productions, 1999, 2001, 2005, 2006.
14. MY DEAREST ANGEL: Lives and letters of Katie Paul Letcher and Greenlee Davidson Letcher, 1895-1954. (Ohio U Press, 2002.) Nominated for Best Non-fiction book in Va, 2002)
15. COMPLETE GUIDE TO EDIBLE WILD PLANTS, MUSHROOMS, FRUITS, AND NUTS (Lyons Press, 2004.)
16. ALL TIME IS NOW: ADVENTURES WITH JENNIE: Memoir about handicapped daughter (Infinity Press, 2005, 2008)
17. ARCHAEOLOGY €” a novel €” still seeking a publisher.
18. MY NEIGHBORS GHOSTS and other amazing true stories (Mariner Publishing, 2007)
20. HOPING FOR GRACE: divorce poems, 2002-3. Many published individually.
21. JOURNEY TO BELIEF: WHEN THE DEAD SPEAK. Seeking a publisher.
22. MY APPALACHIA. In progress.


Lenona.