Codex Mendoza and the Founding of Tenochititlan

2025 Guides - Rights & Responsibilities in History
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Getting Started

Begin your research by brainstorming keywords - the words and phrases you’ll use to search for books, articles, websites, government documents, and other resources. These may include names of people and places or historical concepts like eras and movements. A librarian can suggest “subject headings” to find the most relevant resources.

Example Keywords & Catalog Subject Headings

Codex Mendoza
Codex Mendocino
Don Antonio de Mendoza
Codex AND (Aztec OR Mesoamerican)
Aztec pictogram

Special Collections and Archives Resources

The Special Collections and Archives at the Central Library focus on Colorado and the West, including the Tenth Mountain Division, Conservation history, and the history of Denver, and feature many primary source materials. 

The Special Collections and Archives at the Blair-Caldwell African American Research Library focus on African American history and culture in Colorado and the West, and also feature many primary source collections.

Items from these two locations do not check out and are available to see during the hours we are open. Our Special Collections staff are available to assist by phone and email and can provide scans of collection items for your project. To determine which of these two locations is best for your project, email history@denverlibrary.org and include "National History Day" in your subject line. You may also call 720-865-1821 (Central) or 720-865-2401 (Blair-Caldwell). 

Database/Online Resources

Library databases are online collections of information, organized for research. Databases contain articles, eBooks, images, maps, primary sources and more. If you don’t have a library card, register online for immediate access to these resources. The following recommended databases are available on our Research and Teen Social Studies pages.

World History (Gale)

From the ancient world to today’s headlines. A chronicle of the great cultures and societies that have formed the history of the human race. Rare primary sources, reliable reference and multimedia content put this vast topic into context.

Available with library card

Prospector: Materials from Other Colorado and Wyoming Libraries

​​As a Denver Public Library customer, you can also borrow materials from other libraries in Colorado and Wyoming. Use Prospector to request materials that DPL does not own.

Internet Sources

Before using information you find on the internet for assignments and research, it is important to establish that the information comes from a reliable and appropriate source. The following websites, from government, academic and nonprofit organizations, have been evaluated for authority, accuracy, content and currency.

This digital version of the Codex Mendoza contains interactive multimedia elements that incorporate transcriptions and explanatory text. It was developed by Mexico's National Institute of Anthropology and History.
The Bodleian Libraries at the University of Oxford provide 188 digitized pages of the Codex Mendoza in their publicly available online digital collection; this library acquired the physical Codex Mendoza in the 1600s.
This single codex image and short accompanying article from Fordham University pairs a description of the Codex Mendoza's creation with historical context and cultural interpretations of the codex's significance. It is part of the university's "Vistas: Visual Culture in Spanish America, 1520-1820" online exhibit.

Contact the Reference Services department for help with your research project