What is "casswell"

Casswell is a station on the Port Authority of Allegheny County's light rail network, located in Bethel Park, Pennsylvania. The street level stop is designed as a small commuter stop, serving area residents who walk to the train so they can be taken toward Downtown Pittsburgh.

Casswell is sometimes referred to as Caswell, which seems to be a historic variation, as the PAT route map and station signs use Casswell, whilst the PAT stop finder uses Caswell and local businesses use both.