Seventy-nine year old Robert Todd Lincoln, the only surviving son of Abraham Lincoln, helped up the stairs at the dedication of the Lincoln Memorial – HistoryNet by Marsha42 | Mar 16, 2026 | Lincoln History | 0 commentsSeventy-nine year old Robert Todd Lincoln, the only surviving son of Abraham Lincoln, helped up the stairs at the dedication of the Lincoln Memorial HistoryNetsourceSubmit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment *Name * Email * Website Save my name, email, and website in this browser for the next time I comment.