 The group used Jotter and Clover's plant list from 1938 as the basis of their work to restore native species destroyed by the Glen Canyon Dam.Jotter died of congestive heart failure on April 30, 2013 in Greensboro, NC.At the time of her death at age 99, Jotter was the last surviving female member of the 1938 Grand Canyon expedition, as Clover had passed away in 1980.