Sixteenth-Century Aztec Manuscript Goes on Loan to Mexico as Dispute Over Permanent Restitution Persists

A priceless 16th-century Aztec pictorial manuscript, which records the rise and eventual collapse of the Aztec Empire, has gone on public view at the National Museum of Anthropology in Mexico City after spending nearly two centuries in French possession. The temporary arrival of the historic artifact has reignited intense cultural and diplomatic debate over whether the precious document should be permanently returned to its country of origin.

Known as the Codex Azcatitlan, the document was delivered to Mexico on a temporary loan from the National Library of France to commemorate two centuries of diplomatic relations between the two countries. However, Mexican officials, historians, and cultural campaigners maintain that a temporary exhibition does not suffice, urging authorities in Paris to surrender the historical treasure permanently.

The public unveiling of the manuscript drew emotional reactions from visitors, particularly members of Indigenous groups who have spent years advocating for the restitution of pre-Hispanic and colonial heritage. Attendees gathered around a secure glass exhibition case inside the museum to view two folios from the fragile, centuries-old document.

Among those in attendance was Emilia Mendoza, a representative of the Hnahnu Indigenous community, who articulated the profound sense of grievance and vindication shared by many activists. Mendoza described the centuries-long separation from the codex as historical theft, framing the current exhibition in Mexico City as a battle won and a crucial first step toward the ultimate repatriation of ancient Mexican books currently held across the globe.

Mexico's Foreign Minister, Roberto Velasco, reinforced the symbolic and historical weight of the exhibition during remarks delivered at the inauguration ceremony. Velasco framed the display as an essential reunion between contemporary Mexicans and their collective memory, emphasizing that the document's pictograms serve as the written voice of ancestral forebears and represent the foundational roots of Mexican national identity.

Crafted in the 16th century shortly following the arrival of Spanish forces in the Americas, the Codex Azcatitlan is recognized by scholars as one of the most vital surviving chronicles of Aztec history and culture. The illustrated pages document the pivotal migration of the Aztec people from their mythical birthplace of Aztlan to the promised land of Tenochtitlan, the ancient imperial capital that preceded modern Mexico City.

The visual narrative of the manuscript is rendered through elaborate pictograms filled with vibrant hues of red, blue, green, and yellow. Its illustrations capture ritual ceremonies performed at pyramid temples and portray warriors adorned in intricate feathered headdresses, while also detailing the profound disruption of the Spanish conquest and the subsequent introduction of Christianity.

From a material standpoint, the manuscript comprises 25 sheets of parchment that had originally been imported from Europe during the early colonial era. The document was transported out of Mexico roughly a century and a half ago by Joseph Marius Alexis Aubin, a 19th-century French researcher who specialized in the study of Indigenous American cultures.

Aubin’s collection eventually changed hands, and in 1898, the widow of Eugene Goupil, a Franco-Mexican collector, formally donated the Codex Azcatitlan to the National Library of France. The Paris-based institution has held the document in its permanent archives ever since, defending its legal custodianship for more than a century.

The loan takes place against the backdrop of a high-level diplomatic push led by Mexican President Claudia Sheinbaum. During a formal visit to Mexico last year by French President Emmanuel Macron, Sheinbaum personally pressed her French counterpart for the permanent return of both the Codex Azcatitlan and another prominent manuscript, the Codex Borbonicus.

The Mexican government's demands reflect a broader national initiative to recover colonial-era cultural artifacts scattered across foreign institutions. According to figures released last year by the National Institute of Anthropology and History, Mexican authorities have succeeded in securing the repatriation of more than 16,200 archaeological and historical items from various international sources since 2018.

Despite these ongoing recovery successes, the continued foreign retention of primary historical manuscripts remains a point of frustration among domestic specialists. At the exhibition opening, Karen Trejo, a 28-year-old ethnohistorian, voiced the prevailing sentiment among many local researchers by questioning why a foundational record of Mexican heritage continues to reside abroad rather than in Mexico.

Compounding the broader cultural dispute is the fate of the Codex Borbonicus, another major volume of Aztec heritage preserved in France. That document, which contains detailed illustrations of solar and divinatory calendars, is housed in the library of the National Assembly, the lower chamber of the French parliament, which continues to assert its legal ownership over the artifact.

Diplomatic relations regarding Mexican codices held in France have historically generated acute international friction. In 1982, tensions erupted when a Mexican lawyer, Jose Luis Castaneda, took another valuable manuscript, the Codex Tonalamatl, from the National Library of France and transported it back to Mexico; while French authorities condemned the act as theft, the Mexican public celebrated the recovery and the state retained the artifact.

For the moment, French institutions, including both the National Library and the National Assembly, continue to assert that they are the legitimate, rightful owners of the Aztec codices in their custody. While the temporary exhibition of the Codex Azcatitlan marks a notable bilateral gesture, the fundamental disagreement over ownership ensures that Mexico's campaign for full repatriation will remain an active diplomatic priority.