Texas Historical Marker

Guenther's Upper Mill, Site of

San Antonio · Bexar County · placed 1979

Hear Duane tell it

Bexar County, Texas

Duane's take

Here's the story as the official marker tells it — and friend, this one's got layers worth peelin' back. Carl H. Guenther came to San Antonio with flour in his blood and Germany at his back.

Trained as a millwright in the old country, he got his operation going in 1859 at the site of what would become the Pioneer Flour Mills. Now, most men would've stopped there — planted a flag, called it good. Not Carl Guenther.

In 1868, he built another dam and another mill, this one upstream, right here at this very location. And because it sat closer to town, that upper mill became the go-to outlet for products from both plants. Both of them.

The man was running a two-mill empire on the San Antonio River. Carl H. Guenther, 1826 to 1902, left behind an operation with serious reach.

Around 1900, the Guenther family made a decision — consolidate, move the whole show downstream to that original facility, and leave the upper mill to its own fate. And that's where the story gets interesting, because an empty mill on a river is an invitation. First came a macaroni factory.

Then an ice cream company. Then, in a turn nobody saw coming, a garage. A garage.

A building that had ground grain and fed a city was parking automobiles. But even that chapter had an end. In 1926, the structure was razed — taken down to widen the San Antonio River.

The river itself swallowed the evidence. All that's left is the marker, and now, this story.

What the marker says

Trained as a millwright in his native Germany, Carl H. Guenther (1826-1902) started his San Antonio operation in 1859 at the site of the present Pioneer Flour Mills. In 1868 he built another dam and mill upstream at this location. Because it was closer to town, the upper mill was an outlet for products from both plants. About 1900 the Guenther family began operating exclusively from the downstream facility. The vacated upper mill housed a macaroni factory, an ice cream company, and later a garage. In 1926 the structure was razed to widen the San Antonio River. (1979)

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