Abstract
On Oct. 2006, West Japan Railway Co. (JR West) designated a new Historic Quasi Railway Heritage. This new designation contains seven heritages as follows. 1) Eighteen steam locomotives. 2) A Umekoji Steam Locomotive Depot. 3) A turntable. 4) Running trucks accompanying Umekoji Steam Locomotive Depot. 5) Many kinds of reparative tools for steam locomotives in working order. 6) Reparative documents for steam locomotives. 7) A wooden building of old Nijo Station. In this report, a short history of Japanese historic railway heritage, designation of the historic railway heritages in 2004 by JR West, the new designation of historic quasi railway heritage in 2006 by JR West, and their historical significance from the viewpoint of history of technology will be explained.