The booth to the north has ammo boxes, bed, and an advanced safe. In the station itself, there's a Nuka-Cola Quantum and Cherry inside the vending machines. The stall in the men's restroom has a caps stash inside but rigged on the door
The train station area below has a puzzle that you need to solve in order to fully explore the area. Highlight the text below for the solution:
Follow the corridor to the end where you can find a Super Mutant Bladed Helmet beside the lockers. Follow the corridor and stairs until you reach the next room which contains a weapons workbench, green steamer trunk, medkit, and Super Mutant Bracers. Unchain the door and leave the area.