December 27, 1918, The company submitted an additional request for permission to extend its line through Yamazaki, Nagaoka, Katsura, Nishikyogoku and Saiin to Shijo Omiya.
1918年（大正7年）12月27日延長線追願（山崎、長岡、桂、西京極、西院、四条大宮）。