Most of us with an interest in Bell System tools have seen these boxes. Bell called this the "D Wrench Kit".
Below is a picture of a partial kit. Shown is a 3/8" ratchet, a 3/8" drive 3/16" hex driver, and three 9/16" 3/8" drive sockets. The ratchet is a Herbrand, two of the sockets are Challenger, one is a Snap-on, the hex driver is Proto. I'm pretty sure all these came out of a D Kit, though I've seen very little Snap-on Bell System stuff. None of this is marked Bell System. I might have a couple more of the pieces around, or they might have gone to one of Dad's grandkids when I put together tool kits for them.
The brands of the tools in the kit surely varied--the original ratchet could have been Proto, Herbrand, Cornwell--I've seen all these associated with Bell and Western Electric. My father had a Cornwell ratchet he loved which I gave to his grandson that might have come out of this kit.
I have a PDF from Bell showing this kit and giving a description. I can't figure out how to attach a PDF here but I'd be happy to send it to any who are interested. I can't figure out a good way to post it here as my printer is dead and a screen shot would be near unreadable. It's a cool document, which shows the contents.
Here's the list of items called for:
Reversible 3/8" ratchet
3/8" socket
7/16" socket
1/2" socket
9/16" socket
3 1/2" extension
3/16" hex
9/16" combination wrench
The following language describes use of the kit:
"The 3/8-inch socket is used to facilitate tightening B and C Sealing Clamps having hex-head bolts. The 7/16- and 9/16-inch sockets and the 9/16-inch combination wrench are used to tighten bolts in splice closures. The hexagonal screwdriver is for use in assembling 8-, 9-, and 10-type splice enclosures. The 1/2-inch socket is used to tighten the V-band clamps on 460- and 470- type apparatus cases."
