Amtrak Begins B&P Tunnel Replacement Program Work - Amtrak Media

B&P tunnel study moves forward - Railway Age

USD 16.4 billion for projects along Northeast Corridor (NEC)

MBTA Commuter Rail - Wikipedia

Baltimore and Potomac Tunnel project begins

Frederick Douglass Tunnel Program

Passenger Rail Is Not Dead Yet - The American Prospect

Residents Against The Tunnels - Home

Could Maryland be ready to replace Baltimore's oldest rail tunnel? – Greater Greater Washington

Amtrak Releases FY2021 Results - Railway Age

News Release_Amtrak B&P Tunnel Replacement Program Update_FINAL - Amtrak Media