I would suggest that you order your materials through Dick Blick, Daniel Smith, or Graphic Chemicals. Graphic Chemicals is for all kinds of printmaking techniques, and that is all they sell. You can find all three of these mail order artist warehouses online, and they always send a catalog with your first order if you request one at the time of the order.
If you do not want to do the mail order I would suggest that you check your local college bookstore for supplies. All colleges that have art departments carry the supplies for the different classes.
Ah, make the most of what we yet may spend, before we too into the dust descend.... Omar Khayyam
Stone Chief Studio