Bill Morrissey's recordings are sold in most record stores, at least in the United States. The are usually in the "folk" section. If they don't have the title you want, they will probably be glad to order it for you.
Alternatively, you can order Bill's albums from Rounder Records for mail delivery. Orders may be entered by e-mail (through an order form at their web site) or by phone (details on the same order form page).
Here are two simple ways to proceed from here: