TURNER, RALPH. B.1935.
Contour diagram of Schröter's Valley, probably Tucson, AZ, 1974, ink, colored pencil and white-out on several sheets of paper, mounted on 2 sheets of board, coordinates and several topographical features labeled, inscribed "Measurements from Relief model _ R. Turner, 1974" at foot, overall 760 x 1670 mm, framed.
Turner made a relief model of Schröter's Valley in 1973.
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