I believe it was 1-800-543-6400, tell em you bought a husky compressor and it was missing those items, they'll ask you for your model number, serial number and then you'll have to scan and email them a copy of your receipt.
Got one of these about 2 weeks ago thanks to this thread. Mine was the last unit, and didn't have the metal air canister, oil breather or manual. Store manager told me to call up Campbell Hausfeld and have them provide the parts, I called them up and gave them my model and serial number and they...
Here's one I made a few years ago.
It's made from a 4.6L sohc block, heavy as hell, I made a coaster out of a piston also, got lazy and didn't make any more than 1 piston coaster thoguh, had to mill out the center of the piston.