i am wondering how to get to the former B&M shops to take pictures of the place, but i have no idea on where it is located or how to get to it. I understand that i will need to take the commuter rail train from north station to the north billerica depot, but from there i have no idea on how to get there. if anyone could place help me out on how to get to the former b&M shops i would greatly appreciate it, thank you