Woodlyn, Pennsylvania

The Bridge in Ridley Park Borough was a historic stone arch bridge located at Ridley Park, Pennsylvania. It measured approximately 75-foot-long (23 m), with a single arch span of 24-foot (7.3 m). Added to the National Register of Historic Places in 1988, this building was delisted in 1993 after being damaged by two storms in 1988 and 1989.

Crum Lynne station is a station on the SEPTA Wilmington/Newark Line. Though the station sits along the Northeast Corridor, it is not served by any Amtrak intercity services. The station, located at Chester Pike (US 13) & West Ridley Avenue in Ridley Park, Pennsylvania, is actually northeast of the community the station is named for. It was named by a then-Pennsylvania Railroad vice president after Crumlin, Wales, where his mother was born. It includes a 14-space parking lot, and sheltered platforms on both West Ridley Avenue and Chester Pike.

WRSD, known as "Ridley School District Radio", is a variety radio station which is broadcast in the Philadelphia area. The station is broadcast locally from a transmitter located in Folsom, Pennsylvania, and covers a fairly large radius around the Folsom, Pennsylvania area. WRSD features a variety of programming, which is done during the school year by students of Ridley High School.

Crum Lynne is an unincorporated community in Ridley Township, Delaware County, Pennsylvania, United States.

Ridley High School serves the Ridley School District. It is located in Folsom, Pennsylvania, United States. The new high school opened in September 2001. In the 2017–2018 school year, Ridley High School had 1,787 students.

Ridley School District is a large, suburban public school district in southeastern Delaware County, Pennsylvania. It serves the residents of Ridley Township, and the boroughs of Ridley Park and Eddystone. Ridley School District encompasses approximately 8 square miles. The district has one high school, one middle school, and seven elementary schools. According to 2017-21 ACS-ED data, the district serves a resident population of 40,369. The median household income is $77,304, versus a state median income of $67,587, and national median income of $69,021.

Ridley Township is a township in Delaware County, Pennsylvania, United States. The population was 30,768 at the 2010 census. Ridley Township contains the (CDPs) of Folsom and Woodlyn, along with the unincorporated communities of Crum Lynne and Holmes and a portion of Secane.

On April 10, 1917, four days after the United States declared war on Germany, an explosion at the Eddystone Ammunition Corporation's artillery shell plant in Eddystone, Pennsylvania, killed 139 people. The majority were women and girls who worked in the loading room, loading shells with black powder. 55 of the victims could not be identified and were buried in a mass grave. Hundreds more were injured. The victims were arguably among the first American casualties of World War I. The explosion was initially blamed on German saboteurs, and later on Russians. It may in fact have been an accident caused by malfunctioning equipment.

Ridley Park is a borough in Delaware County, Pennsylvania, United States. The population was 7,002 at the 2010 census. Ridley Park is the home of Boeing's CH-47 Chinook helicopter division.

Eddystone is a borough in Delaware County, Pennsylvania, United States. The population was 2,410 at the 2010 census.

The Thomas Leiper Estate, also known as Avondale, is an historic, American estate that is located in Wallingford in Nether Providence Township, Delaware County, Pennsylvania. It was added to the National Register of Historic Places in 1971.

General Steel Industries, Inc. (GSI) was an American steel company founded as General Steel Castings Corporation in 1928. The company's first headquarters were in Eddystone, Pennsylvania and, prior to completing its own modern steel foundry in 1930, acquired the operations of the Commonwealth Steel Company, a critical supplier to the rail industry.An acquisition program to diversify from its core steel castings business of manufacturing large steel castings was initiated in the late 1950s and resulted in six divisions and one subsidiary by 1971. The broader business portfolio allowed GSI to close the Castings Division, the company's only business prior to diversification, in 1973. In 1974, GSI was operating 19 plants across the United States and internationally and continued operating as an independent company until it was acquired by Lukens Steel in 1981.