Books by J. R. Southworth:
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Southworth, J. R. (John Reginald), 1866-, ed.: El Directorio Oficial Minero de Mexico / The Official Mining Directory of Mexico (v10 in a series of books on mines and natural resources in Mexico, in Spanish and English; Mexico: J.R. Southworth and P.G. Holms, 1908), also ed. by Percy G. Holms (page images at HathiTrust; US access only)
Additional books by J. R. Southworth in the extended shelves:
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Southworth, J. R. (John Reginald), 1866-: El estado de Veracruz-Llave ... sus historia, agricultura, comercio é industrias, en inglés y español. (Blake & Mackenzie, printers], 1900) (page images at HathiTrust)- Southworth, J. R. (John Reginald), 1866-: Official directory of mines & estates of Mexico (Published by John R. Southworth, F.R.G.S., 1910), also by Blake & Mackenzie (page images at HathiTrust)
- Southworth, J. R. (John Reginald), 1866-: Santa Barbara and Montecito, past and present (Oreña studios, 1920) (page images at HathiTrust)
Find more by J. R. Southworth at your library, or elsewhere.