Brought to Maryland in 1634 by the first colonists on the ships Ark and Dove, this demiculverin was presented to Charles Benedict Calvert of Riversdale in 1845. — Preservation and restoration was funded by the Maryland Heritage Committee of Prince George's County in 1984 to honor the 350th Anniversary of the State of Maryland.

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Cheltenham Wetlands Park was once part of the U.S. Naval Radio Station, Cheltenham, Maryland. It was commissioned in 1939.

“The original antenna fields, comprising creosoted wood telephone poles and metal antenna towers, were located in the acreage surrounding the buildings. All metal antenna poles have been removed from the installation. Some abandoned creosoted wood poles remain in the wooded and swampy sections of the installation.

Established as a radio receiving station before World War II, the installation's mission evolved to administration during the Cold War era.”

Cheltenham Wetlands Park was once part of the U.S. Naval Radio Station, Cheltenham, Maryland. It was commissioned in 1939.

“The original antenna fields, comprising creosoted wood telephone poles and metal antenna towers, were located in the acreage surrounding the buildings. All metal antenna poles have been removed from the installation. Some abandoned creosoted wood poles remain in the wooded and swampy sections of the installation.

Established as a radio receiving station before World War II, the installation's mission evolved to administration during the Cold War era.”

Cheltenham Wetlands Park was once part of the U.S. Naval Radio Station, Cheltenham, Maryland. It was commissioned in 1939.

“The original antenna fields, comprising creosoted wood telephone poles and metal antenna towers, were located in the acreage surrounding the buildings. All metal antenna poles have been removed from the installation. Some abandoned creosoted wood poles remain in the wooded and swampy sections of the installation.

Established as a radio receiving station before World War II, the installation's mission evolved to administration during the Cold War era.”