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Pottery shards unearthed downtown hint at distant presidio trading partners

Pottery shards unearthed downtown hint at distant presidio trading partners

If one man’s trash is another man’s treasure, some local researchers have unearthed a gold mine in downtown Tucson.

Artifacts sifted from more-than-200-year-old waste pits are shedding new light on the daily life and regional trading practices at Tucson’s original presidio.

The latest revelation: broken pieces of Zuni Indian pottery, possibly carried back to the presidio by Spanish soldiers after a long military expedition through present-day New Mexico in 1795.

“It’s just a reminder of how connected everybody was,” said Barbara Mills, a regents professor of anthropology at the University of Arizona. “It’s a reminder of how connected the world was then.”

The pottery pieces were found during a dig early last year on the west side of the historic Pima County Courthouse.

The work by Tucson-based Desert Archaeology uncovered parts of the foundations for the 1868 Pima County Courthouse, the 1880s City Hall and Jail and, in a surprise discovery, the abandoned cesspool for the 1881 county courthouse.

Then, beneath these territorial relics, researchers hit their version of pay dirt: a layer of presidio-era garbage as much as 2 feet thick in places.

From one of Tucson’s earliest trash pits, they pulled the bones of common farm animals, musket balls, gun parts and flints, buttons, seashell jewelry, belt buckle fragments and thousands of pottery shards, including a handful that stood out from the rest.

Particular pottery, made from faraway clay

Historical archaeologist Homer Thiel, who led the excavation, said most of the ceramic debris came from red and brown pottery made by the Tohono O’odham and widely used by presidio residents for cooking and serving food.

Mixed in with those pieces were 29 fragments of white-ware pottery associated with the Pueblo people of northern Arizona and western New Mexico.

Earlier this year, Mills and Desert Archaeology ceramic analyst Jim Heidke examined the stand-out shards and identified four of them as Zuni Polychrome, a style that features a white polished coating decorated with bold red and black paint.

“It’s pretty distinctive. There’s nothing else like it,” Mills said.

“Well-fired” and durable, the Zuni-made ceramic vessels came in a range of sizes from small bowls to large mixing or storage pots, all made from “clay you don’t get down here,” Mills said.

“They don’t last forever, but they are definitely well-made indigenous pottery,” she said. “They’re really quite beautiful.”

According to Mills and Heidke, the designs on the shards discovered downtown are in the same style as Zuni Polychrome work that emerged in the late 1700s and early 1800s.

Thiel said that matches nicely with one well-documented trek to Zuni lands by the soldiers stationed at the presidio.

Keepsakes from a march through New Mexico

Spanish Army Lt. Colonel Hugo O’Conor established the Presidio San Agustín del Tucson on Aug. 20, 1775.

It began as a small, crudely built fort surrounded by earthen berms, but it eventually grew to become one of the largest frontier fortresses — 11 acres of settlements surrounding a garrison protected by an adobe wall 8 to 12 feet high and 700 feet long on each side.

The fort was home to more than 400 people, including about 100 soldiers. Outside the walls lived another 500 O’odham and Apache people.

Thiel said it was the northernmost presidio in the area, 100 miles from the nearest stores, but it was “still hooked into the global trade network.”

Along with the Native American ceramics buried in the ruins of the presidio, researchers have also found pieces of brightly colored majolica dishes from the Mexico City area, bits of porcelain from China and pieces of olive jars from Europe.

“Even though they’re really isolated, you still see this stuff” from faraway places, Thiel said.

Captain Jose Antonio de Zuniga took command of the Tucson presidio in 1794, and on April 9, 1795, he led a group of soldiers on a patrol that lasted almost two months and covered several hundred miles.

Thiel said records of the expedition show the group marched eastward from Tucson before turning north.

Ten days into the journey, they battled Apache warriors. After about a month, they reached the Zuni villages in northwestern New Mexico. They were back in Tucson by the end of May, possibly with some souvenirs in hand.

Historical trash with stories to tell

Thiel said it’s likely that the soldiers bartered with the Zunis for pottery, maybe as gifts for family members back at the presidio.

Mills said most of the shards she examined appeared to come from small serving vessels similar in size to a typical cereal bowl.

“They would have been nice to have around your house to serve things in, or you might put it in your kitchen as a reminder of your travels,” she said.

The fact that they ended up broken in a trash pile suggests they were put to everyday use.

“They weren’t just put up on a shelf,” Mills said.

That’s the great thing about sifting through historical garbage, she said. “It tells you the truth about what people were doing.”

“It’s amazing,” Thiel added. “Whenever I see a hole downtown I have to go look at the dirt to see if there’s anything in it.”

The presidio remained in use until the U.S. Army took control of Tucson in 1856. After that, the fortress was gradually dismantled and built over, until the last section of wall came down in 1918.

A line of “bricks” downtown now marks the outline of where the presidio once stood.

Downtown dig uncovered clues about presidio life

Last year’s excavation was done in preparation for the new January 8th Memorial now being built just west of the county courthouse to commemorate the victims of the 2011 mass shooting in Tucson.

Pima County is funding the archaeological work.

Beyond the Zuni shards, Thiel said, the dig site has yielded a large sample of artifacts and food materials from the Spanish colonial period, providing insights into how those early settlers lived.

Desert Archaeology is now preparing a full report on its findings, which is slated for release in August.

Images of the most impressive pottery pieces will be included in the report. The shards themselves will be added to the collection at the Arizona State Museum, along with the other artifacts from the excavation.

Contact reporter Henry Brean at

520-573-4283 or hbrean@tucson.com.

On Twitter: @RefriedBrean

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