From Liminality of the Japanese Empire: Border Crossings from Okinawa to Colonial Taiwan, by Hiroko Matsuda (U. Hawaii Press, 2018), Kindle loc. ~3760:
In addition to supporting the remaining Okinawans and handling the day-to-day management of the refugee camps, APO [Association for People from Okinawa (Okinawa Dōkyōkai Rengō-kai)] leaders prepared for returning to and rebuilding the ravaged Ryukyu Islands. For instance, knowing that the public library had burned down and that Okinawa had lost most of its books and documents during the war, Kabira Chōshin and other APO members initiated a campaign to collect books to donate to the new government of Okinawa. Taihoku Imperial University held numerous books related to the history and traditions of the Ryukyu Islands, some of which were historical and extremely valuable. Kabira, who had audited classes at the university, was desperate to bring them back to Okinawa and establish the new public library. However, the university, which had already been ceded to the KMT government, did not allow him to do so.
Nevertheless, he did not give up on the most precious historical book held by the university, Previous Documents of Successive Generations (Rekidai hōan), an official compilation of diplomatic documents of the Ryukyu Kingdom Government. Even though this book is one of the most historically important records of the Ryukyu Kingdom, an original copy had been transferred to Tokyo when Okinawa Prefecture was established and was subsequently destroyed in the Great Kantō Earthquake in 1923. Another copy kept in Okinawa had been destroyed by fire when the public library burned down during the war. The copy held by Taihoku Imperial University was based on the original copy that had been in the Okinawa Prefectural Library. Kabira asked a fellow Okinawan to transcribe it while he was waiting for a repatriation vessel and managed to bring it back to Okinawa. Furthermore, Kabira requested that Japanese professors donate their privately owned books upon their repatriation. Because each Japanese repatriate was not allowed to bring more than two bags on boarding the LSTs (landing ships, tank), many professors reacted positively to Kabira’s request and gave away numerous books on Okinawa-related subjects. In that way, Kabira and other APO members collected thousands of books. Kabira received special permission from the KMT government to bring these tens of thousands of books to Okinawa when he repatriated in December 1946. These books composed a major part of the Okinawa Central Library, which was reestablished in 1947. Although Kabira’s cultural activity … did not gain popular support from his fellow Okinawans, he made a great contribution to the reconstruction of Okinawa’s cultural life by transferring colonial Taiwan’s cultural assets to his home islands.
In June 1946, the Supreme Commander for the Allied Powers finally revealed a plan to repatriate some 150,000 Okinawans to the Ryukyu Islands from Japan, Taiwan, China, and the Mariana Islands. Accordingly, the US military government set up two camps for this great multitude of repatriates: Camp Kuba-saki and Camp Costello, commonly known as Camp Yin’numi. On August 17, Camp Kuba-saki officially received a total of 556 repatriates from Kumamoto, Kagoshima, and Miyazaki Prefectures on Kyushu. From that time onward, ships began to travel more frequently from Mainland Japan to Okinawa and Amami-Ōshima in the northern archipelago of the Ryukyus. Between August and December 1946, a total of 139,536 repatriates from Mainland Japan arrived in Okinawa, Amami-Ōshima, and the Miyako Islands.