The property has been traced to early West Jersey Proprietor ownership-Joshua Newbold. Following acquisition by Samuel Wills of Mendham in 1789 a stone house was built (now the kitchen wing). Around the time of the Civil War, and probably at the time of the wedding of Henry C. Seward the main structure was built. The prominance of the Seward family in the area, and the size and Italianate design of the building makes it the most significant home built in Mt. Olive previous to the 1900’s. The local farm was the leader in the area and the Seward formed a diary cooperative to improve the market availability.

The Ford-Faesch House was built in 1768 by Colonel Jacob Ford, builder of the Ford Mansion (Washington’s Headquarters) in Morristown. In 1772, the house was leased to a Swiss ironmaster, John Jacob Faesch, who supplied iron products and ammunition to the Continental Army during the Revolutionary War

L’Ecole Dr. Helen Miller Residence and Office was constructed in 1873 to serve as a one-room schoolhouse. The building became the home and office of Dr. Helen Miller, an early pioneer in female cancer detection and screening. The building is listed on the National and State Registers of Historic Places.

Located in Landing, Roxbury Township, the Lake Hopatcong Train Station served thousands of summer tourists each year between 1911 and 1929. Replacing an earlier depot nearby, the Delaware, Lackawanna & Western Railroad put up this new, modern station in 1910-1911. Built in conjunction with the DL&W’s Lackawanna Cut-Off project, the final product served as a “showpiece” for both Lake Hopatcong and the railroad itself. In 2016, as an extension of the Morris Canal Historic District, the station was added to the National Register of Historic Places.