I have a round milk that is embossed with very elaborate cleaning instructions down one side: Rinse in cold water and wash in hot water with soap and return etc
Zane - The bottle is embossed with large letters down one side: TO KEEP BOTTLE SANITARY WASH IN COLD WATER SOAPSUDS & HOT WATER AND RINSE IN HOT WATER, and on the other side: PUT MILK IMMEDIATLY ON ICE. In smaller letters, at the heel is LGC, which might be Lockport Glass Co. Theres no dairy name, and barely room for one. I've dug dozens of round, embossed 20's era milks, but I've never seen one of these, which isnt to say necessarily that its rare. I'll try to get a picture up soon.