Steve, APLLE for pork. Do you have a BBQ store around? Do a google search for smoke wood or BBQ supplies in your area. BBQ galore sells lots of flavors of wood but shipping will kill ya. Any fruit tree orchards around, go to the owners and ask for scrap limbs, dryem and use them. If you want you can use chips, just wrap in a double foil pouch and poke a whole or 2 in the top, lay on your coals. Hickory is a heavy smoke wood, good for beef.
Mark