Hudson Grist Mill, also known as Crotsley Mill, is a historic grist mill located at Saltillo in Huntingdon County, Pennsylvania. It was built in 1850, and is a 2 1/2-story frame building, measuring . It sits on a rubble stone foundation and has clapboard siding. An elevator head is housed in centrally placed extra story. Attached to the mill is a two-story frame addition. It was listed on the National Register of Historic Places in 1990. References Grinding mills on the National Register of Historic Places in Pennsylvania Industrial buildings completed in 1850 Buildings and structures in Huntingdon County, Pennsylvania Historic buildings and structures in the United States Grinding mills in Pennsylvania National Register of Historic Places in Huntingdon County, Pennsylvania