Here's something I found interesting in the US Trade & Tariff papers concerning Japan that actually has a rather direct link (if only in name) of the subject this thread is dedicated to.
Spoiler:
This was taken out of the abbreviations table.
588.0 Japan. . Japan
Includes the four main islands of Honshu, Kyushu, Shikoku, and
Hokkaido and islands adjacent thereto; the Ryukyus (including
Okinawa, Sakishima, and all other Ryukyu islands), and the
following islands: Nansei-Shoto, Nampo-Shoto, Bonin, Nishinoshima
(Rosario), Volcano, Daito-Jima, Okino-Tori-Shima
(Parece Vela), and Minami-Tori-Shima (Marcus).
Seems one of the places mentioned has 'Rosario' as an official name. A boring piece of trivia, but I found it to be quaint.