The US Cartridge Co used obsolete cartridge boxes for storage of assorted parts and draw pieces. Here are several of these boxes with their content. All are two piece split boxes with the Lowel, Mass address.
280 Ross FMJ bullet draw pieces.
45-60 draw pieces
58-56 Spencer draw pieces.
56-46 Spencer draws Raised “US”
I’m sure there must be many other of these storage boxes out there. What ones do you have?