I recommend reading Philly Inquirer’s Valerie Russ and her ongoing writing about this topic. She has been following this story in meaningful ways. WHYY also reported a few years ago about a really important part of the Tubman story in Philly. You can read more about monuments to Tubman in Monument Lab’s National Monument Audit. For traveling monuments, check out Hank Willis Thomas’ All Power to All People with Kindred Arts.