There is "The Coins and tokens of Nova Scotia" by Eugene Courteau, published by Sanford J Durst of Numismatic Publications, 1982. It's a small pamphlet that is sometimes hard to find. I would check "Abebooks" ... it's a consortium of used book sellers that has a great number of hard-to-find publications that deal with any subject that you can think of, including numismatics. I don't know if Courteau also wrote research on New Brunswick as well, but I would imagine that he did. His research and study into tokens of all types is legendary. Look for it.