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[Letter from R. S. Hyer to Heber Stone - May 31, 1900]

Description: Letter written by R. S. Hyer to Heber Stone. Describes the value of ore in a mine (owned by Stone?) and the costs involved in smelting it in order to make a profit.
Date: May 31, 1900
Creator: Hyer, R. S.
Partner: Southwestern University

[Letter from R. S. Hyer to Heber Stone - October 13, 1905]

Description: Letter written by R. S. Hyer to Heber Stone. Hyer says that neither he nor the professor of chemistry has time to spare to examine the ore that Stone sent.
Date: October 13, 1905
Creator: Hyer, R. S.
Partner: Southwestern University