Daijiten v. 3-4, p 593 (under Eikan shiryaku: Jo Keiyo [Chinese reading: Hsü Chi-yü])
Hsü Chi-yü chi (徐繼畬集), 1995 p. 1, 1st group, etc. (b. 1795; t. Chien-nan; native of Tung-yeh chen, Wu-t‘ai hsien, Shansi Prov.; 1813 chü jen; 1826 chin shih; d. 7/T‘ung-chih kuei yu 1873 at age 79)
歷代人物年里碑傳綜表, 1976 p. 679 (徐繼畬, 1795-1873, 字健男, 號松龕)
His 瀛寰誌略, 2001 p. 1 (徐继畬(1795-1873), 字健男, 号牧田, 松龛, 山西五台人, 道光6年(1826)进士)