Correspondence between Hurd and Earle Gorton Linsley concerning Hurd's field work in Texas and Mexico, between May - August 1951. Hurd's letters informally report on his insect collecting activities. Locations Hurd refers to include but are not limited to Texas, and the following locations in Mexico: El Nevado de Toluca, Tuxpan, Ahuacatlán, and Tehuacán.
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