You are right...after doing some research I found this is indeed a 60 amp fuse box as indicated inside. Those black bakelite boxes pull out and there's cartrige fuses in them. Underneath 2 of the 3 cartridge fuse holders are 4 edison screw in fuses.
As I later learned this is actually now a sub panel for the house, as there's a breaker box outside the home that controls the water heater, dryer, stove, a/c, furnace, etc....and this fuse box inside controls all the wall outlets and ceiling lights.
