"Alley Spring is an unincorporated community in Shannon County, Missouri. Alley Spring the 7th largest spring in Missouri with a discharge of 81 million gallons per day.  The scenic Alley Mill, or ""Old Red Mill"" is located there on a spring and is located in the Ozark National Scenic Riverways.  It was built in 1893, and is a 2 1/2-story, rectangular frame building on a limestone block foundation. It measures 32 feet by 42 feet and houses four steel rollers and a single stone burr.  The Mill is operated as an Ozarks history museum. Nearby a one room schoolhouse and general store add to the feeling of the restored historic hamlet. It once had a post office, but it is now closed and mail now comes from Eminence. The community is named after John Alley, a miller. It was originally named Mammoth Spring and later Barksdale Spring. These names were deemed too long by the Post Office Department of the time, so the village was renamed after a prominent local citizen, John Alley. It was listed on the National Register of Historic Places in 1981."
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