- Frank A. Salamone. Routledge Encyclopedia of Religious Rites, Rituals and Festivals. Berkshire Publishing Group. 2004 [7 April 2012]. （原始内容存档于2013-06-20）.
The Easter egg predates the Christian celebration of Easter.
- Treasures from Royal Tombs of Ur By Richard L. Zettler, Lee Horne, Donald P. Hansen, Holly Pittman 1998 pgs 70-72
- Donahoe's Magazine, Volume 5. T.B. Noonan. 1881 [7 April 2012]. （原始内容存档于2014-01-03）.
The early Christians of Mesopotamia had the custom of dyeing and decorating eggs at Easter. They were stained red, in memory of the blood of Christ, shed at His crucifixion. The Church adopted the custom, and regarded the eggs as the emblem of the resurrection, as is evinced by the benediction of Pope Paul V., about 1610, which reads thus: "Bless, O Lord! we beseech thee, this thy creature of eggs, that it may become a wholesome sustenance to thy faithful servants, eating it in thankfulness to thee on account of the resurrection of the Lord." Thus the custom has come down from ages lost in antiquity.)