I thought I'd seen her mentioned in the paper recently -- she was at this event this past weekend:

Honor the Canyon Women in Your Life! - The Friends of Saguaro National Park is very pleased to announce their spring 2006 event, "Canyon Women," featuring three amazing Arizona women: Katie Lee, Betty Leavengood, and Lauray Yule. Ticket sales go towards preservation and outreach efforts for Saguaro National Park.

She had a memoir out in 2004: Sandstone Seduction : Rivers and Lovers, Canyons and Friends, by Kate Lee.
"Lee's earthy Arizona memoir, peppered with b&w photos of men, friends, rocks, and rivers, limns her love affair with the Southwest, where she grew up in the 1940s. Lee has been a singer, actress, musicologist, and activist on behalf of wilderness, but it's her skill as a storyteller that's the point here. Essays, recollections, journal entries, and snippets of letters ramble through the years like water through Lee's beloved Glen Canyon." Annotation �2004 Book News, Inc., Portland, OR (booknews.com)

Plenty of Google material, try this: http://myhero.com/myhero/hero.asp?hero=k_lee, or Wikipedia. :-)

~ Becky in Tucson