A Paper of Michelson's on the Velocity of Reflected Light [Milnes_TothMaatRev_v5n2(1986)2511.PDF]
Milnes, Harold Willis
Mechanics / Electrodynamics
Michelson, moving mirrors, ballistic theory
It was apparently at Einstein's request that he performed this experiment, which purports to demonstrate that light does not move at any different velocity after reflection by a moving reflecting surface, than it did before incidence.