The book "Notes on Some Maya and Mexican Manuscripts Third Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1881-82, Government Printing, Washington, 1884, pages 3-66" by Cyrus Thomas is a valuable source for the study and understanding of Maya and Mexican cultures. In his work, the author examines in detail various manuscripts containing valuable information about the history, mythology and everyday life of these civilizations. The publication contains many illustrations, diagrams and maps that help the reader to better imagine the mentioned materials. Thomas's work is considered a significant contribution to the study of ancient Native American cultures and will be useful to anyone interested in the anthropology and history of the American continent.