Seler is best known for his foundational studies concerning the ethnography, documents, and history of Mesoamerican cultures, for which he is regarded as one of the most influential scholars active around the turn of the 20th century.[1] Seler laid many fundamentals in understanding and deciphering the Aztec pictorial script. A main contribution was the re-discovery and analysis of the basic Aztec calendar system: the existence of two Aztec calendars, a 365-day solar profane (everyday use) and a 260-day religious calendar. He also noted from the sources that the ceremonial killing victim figures alleged by Spanish priests and military (repeatedly reported as being greater than 10,000 or even 100,000) were most probably vastly exaggerated propaganda. This was supported by excavations in the late 20th century.[citation needed]
Being poor and of ailing health, he was helped and supported for decades by his wife Cäcilie (Cecilia) Seler-Sachs (1855–1935), physically and intellectually. Her photos of Aztec temples and pyramids are still useful to scientists, and after her husband's death she went about verifying his works and publishing them. Seler was also helped by Mexican scholar and historian Antonio Peñafiel.[2][3]
Gesammelte Abhandlungen zur Amerikanischen Sprach- und Alterthumskunde. 5 vols. Berlin : A. Asher, 1902-1923.
Collected Works in Mesoamerican Linguistics and Archaeology. Culver City (CA) : Labyrinthos, 1990-1998; translated (by Charles P. Bowditch & Frank E. Comparato) into English.
Fundación Eduard Seler, non-profit association established 1992 in Mexico City, named after Seler and devoted to the archaeology, ethnohistory and indigenous concerns of the region studied by Seler (in Spanish)