http://www.nihongokyoshi.co.jp/index.php

https://www.theguardian.com/artanddesign/2017/aug/25/alec-soth-sleeping-by-the-mississippi-loners-preachers-sex-workers-sinners?CMP=share_btn_tw

https://ja.wikipedia.org/wiki/%E3%82%B8%E3%83%A3%E3%83%BC%E3%82%B8%E3%83%BC