I found the wolfsbane at a local Ren Faire store/Witch shop. A bunch of people who wear tunics all the time and have shelves filled with all sorts of cauldrons, pentacles, and other new-age hoopla. BTW, you have to wash your hands after touching wolfsbane because it's extremely poisonous.
The book was written by a man named Dudley Wright and is a second printing (his first edition came about in 1914 and after subesequent world travels, he added to it for the 1924 edition). It's pretty near mint and is full of vampire lore from all around the world including Africa, Greece, Asia, and, of course, Europe (especially eastern Europe).