IV. T.L.s. from Edm. Castillo to Vincent Yorke, sending him the latest Income Tax laws and acknowledging receipt of a photograph of Yorke with one of his racehorses in the winner's circle. He writes of two instances of dynamiting the company's bridges near San Juan Teotihuacan, but says the small fuse and amount of dynamite used resulted in little structural damage. He says it has been a "trying year"., 4.19.1927

IV. T.L.s. from Edm. Castillo to Vincent Yorke, sending him the latest Income Tax laws and acknowledging receipt of a photograph of Yorke with one of his racehorses in the winner's circle. He writes of two instances of dynamiting the company's bridges near San Juan Teotihuacan, but says the small fuse and amount of dynamite used resulted in little structural damage. He says it has been a "trying year"., 4.19.1927, Box: 1, Folder: 6. Mexican Railway Company Limited Records, 2014-22. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/503524 Accessed September 25, 2026.