Pichardo's treatise on the limits of Louisiana and Texas an argumentative historical treatise with reference to the verification of the true limits of the provinces of Louisiana and Texas; written by father José Antonio Pichardo, of the Congregation of the Oratory of San Felipe Neri, to disprove the claim of the United States that Texas was inclued in the Louisiana purchase of 1803. Published for the first time from a transcript of the original manuscript in the Mexican Archives; translated into english by Charles Wilson Hackett, PH. D. Charmion Clair Shelby, M. A., and Mary Ruth Splawn, M. A., and edited and annotated / by Charles Wilson Hackett, Ph. D., professor of latin-american history in The University of Texas - Pichardo, Jose Antonio, 1748-1812