Related Clues:

• B&O and others
• Lines with Xings
• XING sites
• Training systs
• Lines to Penn Sta
• Cos. with Xings
• Monopoly quartet: abbr
• Some freight cos
• Amtrak and B&O, e.g
• Monopoly foursome: Abbr
• Train cos
• B&O and Reading, for short
• They go through Xings
• Four Monopoly squares (Abbr.)
• Pennsylvania and Erie, once: Abbr