The Eden Cemetery in Collingdale is the final resting place for about 17 ball players from the Negro Leagues.

But you’d never know it.

The Hilldale Giants, Negro League pioneers, once played on a Darby field where a strip mall now sits.

The Giants were the first teams to play in the Negro League World Series, reports Randy Gyllenhaal for NBC 10.

Over at Eden Cemetery, there’s a headstone for activist Octavius Catto, who made Philadelphia an important hub for the Negro League.

But other players are harder to find. Many were buried in unmarked graves, their families too poor to pay for headstones.  

 “A lot of these guys who played prior to integration just kind of vanished into history,” said Vince Ciaramella.  

Ciaramella is working to keep their stories alive, researching with his young son. So far, they’ve located 30 unmarked graves in Western PA and are raising money to fund grave markers.

 “These guys were marginalized and forgotten in death. To me that’s a travesty and an injustice that can be righted today by helping retell their stories and bringing these guys back to the limelight one more time.”

Read more about the effort to remember the Black players of the Negro League at NBC 10.

ABC News takes a look at the Negro League baseball legacy.