Search results for H. > April 2, 1926   
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Clay, H. B. (2)

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1. Southwestern Laboratories one day cement test card Southwestern Laboratories one day cement test card One day report from Southwestern Laboratories for the cement used by Don Hall in the construction of the Houston Negro Hospital.
2. Southwestern Laboratories one day cement test card Southwestern Laboratories one day cement test card One day report from Southwestern Laboratories for the cement used by Don Hall in the construction of the Houston Negro Hospital.
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