This says "Lynne Marie Foster," but the birth date is a match, anyway. It's from Atascadero, California.
https://www.dignitymemorial.com/obituaries/atascadero-ca/lynne-foster-10075535
(Incredibly, there are at least four other recently deceased women with the same full name! Well, the spelling is slightly different, in two cases.)
What I posted in 2017:
One address I have for her is Bishop, California (northwest of Death Valley).
"Take a Hike!" and "Exploring the Grand Canyon" are both juveniles.
https://lh3.googleusercontent.com/-F_MSZx-HPOg/AAAAAAAAAAI/AAAAAAAAABc/qKOj6hc0Qgk/photo.jpg
(photo, presumably from Central America)
https://wonderspress.com/
(review of "Wonders of Southern Scotland" - with another photo of Foster)
https://www.deseret.com/1991/8/6/18934648/guide-helps-kids-take-a-hike-and-have-fun?_amp=true
(1991 review of "Take a Hike!")
WORKS:
Mountaineering Basics, 1983
Adventuring in the California Desert: The Sierra Club Travel Guide to the Great Basin, Mojave, and Colorado Desert Regions of California, 1987
Exploring the Grand Canyon, 1990
Take a Hike!: The Sierra Club Kid's Guide to Hiking and Backpacking, 1991
Wonders of Southern Scotland: A Guide to 35 Top Historic & Prehistoric Sites, 2014
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