The P.R.R. YMCA Athletic Field, also known as Penmar Park and commonly referred to in the 1930s and 1940s as the 44th and Parkside ballpark, was an athletic field and ballpark in West Philadelphia from 1903 to the early 1950s. It was built by the Pennsylvania Railroad YMCA. It was the home of the Pennsylvania Railroad YMCA of Philadelphia football club, often called the "Railroaders", from 1903 through 1905, and the Philadelphia Stars Negro league baseball club from 1936 until 1952. The field was also used as a multi-sport athletic field used by the local community. During the 1930s the field was the site of home football games of Overbrook High School and St. Joseph's Preparatory School. Overbrook also played their home baseball games there. For example, the Philadelphia College of Pharma