| Advertisement by Sanae Shōkai|
in Photo Art no.80, June 1955. (Image rights)
- ↑ The exact address was Tōkyō Chūō-ku Nihonbashi Hongokuchō 3–4 (東京中央区日本橋本石町3–4). Source: advertisement dated 1954 reproduced at Shashin-Bako, and advertisement in Photo Art no.80, June 1955, p.105.
- Photo Art rinji zōkan: Kamera akusesarī zensho (フォトアート臨時増刊・カメラアクセサリー全書, Photo Art special issue: All the camera accessories). June 1955, no.80 of the magazine. Advertisement by Sanae Shōkai on p.105.
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