Day Symbols of the Maya Year: Sixteenth Annual Report of the Bureau of American Ethnology to the Secretary of the Smithsonian Institution, 1894-1895, Government Printing Office, Washington, 1897, Pages 199-266.

A scholarly analysis written in the late 19th century. This work focuses on the Maya calendar, specifically exploring the significance and characteristics of the day symbols used in this ancient timekeeping system. The book delves into linguistic, historical, and cultural aspects of the Maya civilization, making it a crucial resource for understanding their calendrical practices and cosmology. The beginning of the text introduces the scope of the study, noting that the author presents findings on the names and symbols of the days in the Maya calendar. It emphasizes the current academic discourse surrounding the phonetic and symbolic interpretations of these glyphs, acknowledging the work of scholars like Drs. Seler and Brinton. Thomas clarifies his position on the representation of phonetic elements within these symbols and how they may relate to traditional concepts in Maya mythology and spirituality. This establishes a foundation for the subsequent detailed examination of the specific day symbols, starting with the first day, which is systematically analyzed, including its variations across different dialects and its phonetic attributes.