Rebel Defenses of Galveston and Vicinity, Surveyed and Drawn by order of G. L. Gillespie, Brevet Major & Chief Engineer, Miliary Division of the Gulf, Under the Direction of Lt. S. E. McGregory, Comdg. Topl. Party, Oct. 1865. (Records of the Office of the Chief of Engineers, 77-CWMF-Q111)


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