112C, also known as the Iron Hill Museum, is a historic one-room school building located near Newark in New Castle County, Delaware.

It was designed by architect James Oscar Betelle and built in 1923, and is 1+1⁄2-story, rectangular frame, wood-shingled building on a concrete foundation with a medium-pitched gable roof.

The building measures 24 feet by 48 feet, and features a pedimented portico centered on the gable end in the Colonial Revival style.

[1] The Iron Hill Museum's exhibits include area iron ore mining, Lenni Lenape history and culture, rocks and minerals from around Delaware and around the world, mounted area wildlife, and a display of fossils found in the state.

This article about a property in Delaware on the National Register of Historic Places is a stub.