http://db.history.go.kr/item/level.do?levelId=npda_1924_01_13_v0003_0770
http://db.history.go.kr/item/level.do?levelId=npda_1924_05_05_v0003_0620
https://www.nl.go.kr/newspaper/detail.do?content_id=CNTS-00093800701&from=%EC%8B%A0%EB%AC%B8%20%EA%B2%80%EC%83%89