Unknown, V.M. Slipher and Stanley Sykes place a wreath on Percival Lowell's Tomb, 1955-03-13
V.M. Slipher and Stanley Sykes place a wreath on Percival Lowell's tomb on the 100th anniversary of Lowell's birth
Tags: Slipher V.M., Sykes Stanley
Slipher, Vesto Melvin, Drawings of Mars, 1902, 1902-10-15
Drawings of Mars, October 15, 1902 by V.M. Slipher with additional drawings by Stanley Sykes.
Tags: Mars, Slipher V.M., Sykes Stanley
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