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[Letter from Thomas Mitchell Campbell to E. P. Ripley, June 4, 1909]

Description: Letter from Thomas Mitchell Campbell to E. P. Ripley, discussing the proposed railways in Texas by the national railroad corporations. This copy of the letter is only pages 1-3, missing the final pages. The heading reads "Executive Office, State of Texas. Austin."
Date: June 4, 1909
Creator: Campbell, Thomas Mitchell, 1856-1923
Partner: Hardin-Simmons University Library

Electromagnetic Ore-Separator.

Description: Patent for an electromagnetic ore separator, which reduces the risk of any valuable particles falling with the waste mineral material below the magnetic surface.
Date: February 16, 1909
Creator: Charlton, Thomas
Partner: UNT Libraries Government Documents Department
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