[S78] Massachusetts Vital Records to 1850, (database), online , Newbury - V1, p. 286-287 children of Robert Long.
[S61] Hoyt, David, The Old Families of Salisbury and Amesbury Massachusetts (Providence, R. I., Vol. I 1897, Vol. II 1902. Viewed on archive.org & FamilySearch.org., ), p. 232.