Mrs. Robert E. Lee (Mary Anna)
George Washington Custis Lee (first son of REL and MAL)
Mary Custis Lee (first daughter) 
William Henry Fitzhugh Lee
Anne Carter Lee didn't allow photos to be taken of her due to having stabbed herself in the eye with scissors when she was a child. She was not blinded by the accident, however.
Eleanor Agnes Lee 
Robert E. Lee, Jr. 
Mildred Lee
Daughter Agnes seems to me to be the one whose facial features and inner strength, quiet and steely determination one might say, most resemble her father's. Comments from those who have studied this family in depth?