Did Robert Lincoln Ride the Funeral Train to Baltimore?

[RJNorton]

Additional question: where was Tad? Was he with RTL or with his mother in the White House?

I think Tad stayed back with Mary. Dr. Wayne C. Temple writes, "That evening (May 3), Capt. Robert T. Lincoln arrived (in Springfield), accompanied by John George Nicolay, Lincoln's secretary. They were close friends. Robert immediately went to the residence of John Todd Stuart where he had been invited to stay."