William and Catherine Biggs Farm

Toms Creek is a 20.8-mile-long (33.5 km) tributary of the Monocacy River in Pennsylvania and Maryland in the United States. Via the Monocacy River, it is part of the Potomac River watershed, flowing to Chesapeake Bay and the Atlantic Ocean. The creek rises on South Mountain in southwestern Adams County, Pennsylvania, and flows south, then southeast, through Iron Springs and Carroll Valley, Pennsylvania, and past Emmitsburg, Maryland.

Keysville is an unincorporated community in Carroll County, Maryland, United States. Terra Rubra was listed on the National Register of Historic Places in 1978.

Detour is an unincorporated community in Carroll County, Maryland, United States.

Double Pipe Creek, sometimes called Pipe Creek, is a major tributary of the Monocacy River in Carroll County and Frederick County in Maryland, located several miles north and west of Westminster. The creek is only 1.6 miles (2.6 km) long, but is formed by the confluence of two much longer streams, Big Pipe Creek and Little Pipe Creek.

Terra Rubra is a historic home and plantation located near Keysville, Carroll County, Maryland, United States. It was the birth site of Francis Scott Key in 1779. The present Federal-style house was built in the 1850s after the Key residence had become badly deteriorated. The original house was built in the 1770s by Francis Key for his son, John Ross Key, father of Francis Scott Key.It was listed on the National Register of Historic Places in 1978.

The Fourpoints Bridge, near Emmitsburg, Maryland is a wrought iron bridge by the Wrought Iron Bridge Company of Canton, Ohio. The bridge crosses Toms Creek and is similar to the Poffenberger Road Bridge elsewhere in Frederick County. The 103-foot Pratt truss bridge remains in daily use.

Begun in 1898 in rural Frederick County, Maryland, the LeGore Bridge was completed and opened to the public in 1900. It was built and maintained by the owners of the LeGore Lime Company, including local businessman James William LeGore and his company advisor, Eugene Hammond. It is 340 feet (100 m) in length, 27 feet (8.2 m) wide and 64 feet (20 m) high. The bridge is situated at 39°35'N 77°19'W. The five arch limestone bridge was restored in 1981 and 2009.The bridge was built for three purposes: as part of a hydroelectric dam for an electric railway going from the Nation's Capital to Gettysburg, Pennsylvania, for transport of limestone from the LeGore Quarry to sales companies in Pennsylvania, and to accommodate the state-owned road for public travel across the Monocacy River.Only the last of these panned out, and the LeGore Bridge is still used for everyday automobile traffic. It was listed on the National Register of Historic Places in 1978.

Ladiesburg is an unincorporated community in Frederick County, in the U.S. state of Maryland.

Middle Creek is a 17.1-mile-long (27.5 km) tributary of Toms Creek in Pennsylvania and Maryland in the United States.Middle Creek is born on the eastern slope of the Blue Ridge Mountains, and from there flows through Adams County, Pennsylvania and Frederick County, Maryland to join Toms Creek near Emmitsburg.Water from Middle Creek flows via Toms Creek, the Monocacy River, and the Potomac River to Chesapeake Bay and eventually the Atlantic Ocean.

The Old Mill Road Bridge is a historic bridge near Rocky Ridge, Frederick County, Maryland, United States. The bridge spans Owens Creek southwest of Rocky Ridge on Old Mill Road. It is a Pratt half-hip through truss structure in a single span 69 feet (21 m) long and 16 feet (4.9 m). It was built in 1882 by the Pittsburgh Bridge Company, Pittsburgh, Pennsylvania.The Old Mill Road Bridge was listed on the National Register of Historic Places in 1979.

Keymar is an unincorporated community in Carroll County, Maryland, United States. The name of the community is a portmanteau of the family name Key (of which Francis Scott Key was a member) and Mar for Maryland. In 1822, Francis Scott Key sold his father's mansion and estate on Pipe Creek near this community. Keymar was likely the name of that estate.

The Little Pipe Creek bridge and viaduct is a 705-foot (215 m) continuous truss bridge with main span and 19 viaduct sections as well as an active railroad trestle crossing Little Pipe Creek south of Keymar, Maryland. Originally constructed by the Frederick and Pennsylvania Line Railroad Company (F&PL). Construction on the trestle began in late 1871, and continued until April 1872. The Pennsylvania Railroad acquired control of the F&PL in 1896, and rebuilt the bridge that year as an open deck riveted iron plate under girder bridge and then again in 1902-1903 using steel in the bridge and trestle. In 1915, the bridge was surveyed as part of the Interstate Commerce Commission's effort to establish freight rates for the parent railroad. The United States Railroad Administration rebuilt the creek span circa 1917. Additional work rebuilding the bridge and trestle was performed from 1982 to 1989 by the Maryland State Railroad Administration. In 1991, the bridge was surveyed as part of the Maryland Historic Sites Inventory. As of 2021, the bridge is in rail service, operated by the Maryland Midland Railway.