It was completed in 1912, and stands on the corner of West St. and the Wilmington Rail Viaduct.

It is a three-story, detached, rectangular brick-faced building with two small rear wings in the Colonial Revival style.

It features two large, decorated copper-faced bay windows projecting from each face of the right corner of the second story.

It survived the closing of the Harlan Plant in 1944, and once housed laboratories for Gates Engineering Company.

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