Slate Ridge School
 Slate Ridge School is a historic school located at Whiteford Harford County Maryland. The main block of the building is two stories constructed of brick with a slate hip roof and a small wooden cupola in the center. It was built in 1912 and designed by the Baltimore architect Otto Simonson. A narrow hyphen containing a stairwell and corridor connects the main block to a similar two-story rectangular block and a one-story wing containing a stage and gymnasium added just after World War II.