Narrow Gauge Turn Of The Century Model Railroading! The TOCng (Turn Of the Century Narrow Gauge) email group is primarily for model railroaders that have an interest in narrow gauge lines during, before, or near the 1900's. Our purpose is to exchange information, modeling tips, ideas, concepts, etc., that can aid our modeling, or to increase our knowledge and understanding of narrow gauge railroading during the TOC/early era. In addition, general comaraderie of those with like modeling interests can be experienced.