Below are a few helpful links for the notebook and pen junkie.
General Notebook and Pen Supplies
http://www.norfolkstationery.com/ Whever possible, I prefer to buy pen and notebook supplies locally. Norfolk Stationery is my shop of choice. Very nice selection (they can pretty much order anything you need) and the staff is absolutely wonderful.
www.jetpens.com This is my favorite source for hard-to-find pens, especially the micro fine point imports from Japan.