Uncertain if 1931-1943 publications are published under official Japanese name: Nihon Ryokō Kyōkai (Nippon Ryokō Kyōkai)
Ryotei to hiyō gaisan, 1931 t.p. (Japan Tsūrisuto Byūrō; shadan hōjin) colophon (off. in Tokyo)
Nihon kankō j., 1955 p. 50, etc. (org. 1912 as Japan Tsūrisuto Byūrō (Japan Tourist Bureau); 1914 abs. Kihinkai [no publs. in LC data base]; 1917 sanctioned as shadan hōjin; 1931 assumed off. Jpn name: Nihon Ryokō Kyōkai (continued to be also known as Japan Tsūrisuto Byūrō: Japan Tourist Bureau); 1943 merged with Kokusai Kankō Kyōkai [no publs. in LC data base] to form Tōa Ryokōsha [no publs. in LC data base]; in same yr. name chged to Tōa Kōtsū Kōsha [no publs. in LC. data base]; 1945 reorg. as Nihon Kōtsu Kōsha)