International-Great Northern Railroad Company (Tex.), map showing route in 1906.     Source: National Railway Publication Company. 1906. The Official Guide of the Railways, and steam navigation lines of the United States, Porto Rico, Canada, Mexico and Cuba, etc. [February, 1906]. New York, N.Y.: National Railway Publication Co., 1906.           << Map Index             Information and images were digitized and proofread from the original source documents by Murry Hammond. Contact Murry for all corrections, additions, and contributions of new material.