The Manchu census register files of Olunchun in Qing Dynasty stored in Heilongjiang Archives contain a great amount of information about the Olunchun people.

• 黑龙江省档案馆馆藏清代鄂伦春满文户籍档案包括户口册、三代红白册、官员名册、比丁册、牲丁册、部落花名册等种类,蕴含着大量鄂伦春人口信息。