Special Line History Feature: Sunagawa Station, Mitsui Private Railway and Kawaguchi Gravel Railway This book is a valuable research journal that delves deep into the history of the "special lines" that existed at Sunagawa Station (Hokkaido), a subject that will captivate core industrial railway and abandoned line enthusiasts. It sheds light on the specialized field of private railways, which major publishers rarely cover, and is compiled based on detailed research and meticulous data collection. The book focuses on the "Mitsui Private Railway" and the "Kawaguchi Gravel Railway," which once supported Sunagawa's industry by transporting coal and gravel. It thoroughly explains the history of these special lines, as well as the changes within Sunagawa Station, using detailed floor plans (circa 1940, circa 1978, etc.) and valuable photos and drawings from the time, covering the transitions of the special lines and transportation conditions. In particular, the relationship between the establishment of the Hokkaido Colliery and Railway (Hokutan), the development of Sunagawa Station, and the Mitsui Bussan Sunagawa Lumber Mill and Kawaguchi Gravel, which supported its transportation, is explored in depth from a local historical perspective. This is not just a collection of photographs, but a scholarly-level doujinshi (self-published magazine) compiled with the cooperation of public institutions such as the Sunagawa City Local History Museum, the Takikawa City Local History Museum, the Hokkaido Museum, and the Hokkaido University Library Northern Materials Room. Special lines are essential for the development of the companies and municipalities that establish them, but when they are abandoned, their traces quickly disappear, and even records tend to be scarce. Therefore, materials that systematically compile detailed layouts, photos of the lines, and historical backgrounds are of high value in visiting the remains of the area and researching railway history. For enthusiasts passionate about coal and industrial railways in Hokkaido, especially the Sorachi region, this book is not just a book, but a time capsule that revives the lost history and railway scenery of the area in the present day. Published in the doujinshi format with limited distribution, its rarity makes it a must-see item. 2023 Sorachi Railway Heritage Research Institute B5 size, 58 pages, Second Edition #Other "Light Railway Narrow Gauge Special Lines" are here #Other "Abolished Private Railway Related Items" are here #Other Hokkaido Books/Materials are here #Other "JR Hokkaido" are here #Other "Hokkaido Abandoned Line Related Items" are here #Abandoned Line Ruins #Abolished Railways #Abandoned Line Exploration #Special Line #Sunagawa Station #Mitsui Private Railway #Kawaguchi Gravel Railway #Hokkaido Railway #Hokkaido Colliery and Railway #Hokutan #Abandoned Line #Railway Heritage #Sorachi Railway #Industrial Heritage #Coal Transportation #Gravel Transportation #Railway History #Industrial Railway #Doujinshi #Local History #Railway Research