"The masonic city planners of Washington D.C. marked the 50th anniversary of Abraham Lincoln’s death by laying the cornerstone of the Lincoln Memorial on his 106th birthday, 12 February 1915."
https://suite.io/mark-shernick/6mfz2s9
"The Lincoln Memorial was finally completed and dedicated on 30 May 1922, with William H. Taft, President Warren G. Harding, and Robert Todd Lincoln (the 79-year-old son of Abraham Lincoln) in attendance."
