Document 1 : “An approach Bell at Kouchi Station” (1955-1975). Source: Ima Yomigaeru Kokutetsu, 2010, Columbia Music Entertainment. CD 3, Track 19. ASIN: B003800360. EAN: 4988001300908.
Document 2 : “An Arrival Bell at Fukui Station” (1955-1975). Source: Ima Yomigaeru Kokutetsu, 2011, Columbia Music Entertainment. CD 6, Track 3. ASIN: B004WLXTZQ. EAN: 4988001475200.
Document 3 : “An Active Window Bell at Yonezawa Station” (1955-1975). Source: Kokutetsu, Furusato no Eki, 1999, Pony Canyon. CD 1, Track 26. ASIN: B00005FR22. EAN: 4988013000506.
Document 4 : “A Departure Bell at Ryougoku Station” (1955-1975). Source: Ima Yomigaeru Kokutetsu, 2010, Columbia Music Entertainment. CD 2, Track 1. ASIN: B003800360. EAN: 4988001300908.
Document 5 : “Ue Wo Muite Arukou: an Arrival Melody at Kawasaki Station” (2008). The song, translated “Sukiyaki” in the US, was major hit in Japan as well as American pop chart. Its author, artist Sakamoto Kyu, was born in Kawasaki. Source: Keikyu Eki Merodi Original (Japanese), 2009, USM Japan. CD 1, Track 6. ASIN: B001PBQLHY. EAN: 498805551146. An excerpt of a live recording can be found on Youtube.