URL https://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Missing_Post_Office_building（Japan,_Kagawa_Prefecture_Mitoyo_Takuma_cho_Awashima）.JPG/1200px-Missing_Post_Office_building（Japan,_Kagawa_Prefecture_Mitoyo_Takuma_cho_Awashima）.JPG
URL2 https://ja.wikipedia.org/wiki/漂流郵便局
