Well, you can simply address it to Kodak, Kodak Customer Serivce, or Chuck Lang who works very closely with Portra and Ektar. I have been trying to reach him as we talk fairly often but have not gotten through with sucess. I'm not sure if he is also the main guy for color paper too. He would definatly try to help us. The address to Kodak is 343 State Street Rochester, NY 14650