Calendar
Our Calendar
The Julian calendar and its errors. How corrected by the Gregorian. Rules for finding the dominical letter, and the day of the week of any event from the days of Julius Caesar 46 B.C. to the year of our Lord four thousand; a new and easy met
The Fundamental Principles of Old and New World Civilizations
A Comparative Research Based on a Study of the Ancient Mexican Religious, Sociological, and Calendrical Systems
Notes on Certain Maya and Mexican Manuscripts
Third Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1881-82, Government Printing Office, Washington, 1884, pages 3-66
