Grimshaw Silk Mill, also known as Freeman Shoes, is a historic factory building located in Reading, Berks County, Pennsylvania. It was built in 1887 and rebuilt in 1889, after a tornado destroyed the original building on January 9, 1889, killing 19 employees and injuring 100. It is a three-story, rectangular brick building measuring 50 feet by 250 feet. A stair tower is topped by a pyramidal roof. It sits on a rubble stone basement and features pilasters, brownstone keystones, and a pressed metal cornice. It was listed on the National Register of Historic Places in 1985.