Daimon Shōkai (大門商会) was a Japanese sales company in the mid-1950s. It was listed as an authorized dealer of the Minon Six III made by Yamato Kōki Kōgyō in 1954; its address at the time was Taitō-ku Minami Inari-chō 22 (台東区南稲荷町22), presumably in Tokyo.
- Asahi Camera (アサヒカメラ) editorial staff. Shōwa 10–40nen kōkoku ni miru kokusan kamera no rekishi (昭和10–40年広告にみる国産カメラの歴史, Japanese camera history as seen in advertisements, 1935–1965). Tokyo: Asahi Shinbunsha, 1994. ISBN 4-02-330312-7.