Her oldest son, influenced by Lettie's generosity, created the Joseph B. Whitehead Foundation as a memorial to his father. A special collection in the Robert W. Woodruff Library at Emory University holds many of Lettie's papers and writings.
Lettie's most senior child was inspired by her kindness to create the Joseph B. Whitehead Foundation as a tribute to his father. A notable collection of Lettie's papers and writings is preserved in the Robert W. Woodruff Library at Emory University, reflecting her enduring legacy.