Good catalogue, nicely done but lacking a number of countries to date.
The author is adding new chapters weekly, the gaps will be eventually closed. For the countries/regions that have already been published, the Banknote Book is more complete and detailed than the Standard Catalog of World Paper Money.
The Canada section lacks a lot of detail, for instance my BC-46a-i Lawson-Bouey; ALM.
All $1 1973 notes are lumped in together in 3 listings. Above note is valued at $4 in UNC, ouch!
Makes one wonder how detailed the chapters for the other countries are?
I do not expect this catalog to be as detailed or accurate as Charlton when it comes to Canadian notes. Same holds true for other large countries such as Australia or Russia, for instance, where coin and banknote catalogs have been regularly published domestically.
However, the Banknote Book is particularly valuable when it comes to the regions like Africa, Central America, or Asia, where numismatic information is not available or scarce. The updates and scans sent by collectors worldwide are sometimes the only source of information, and hundreds of collectors help to put the Banknote Book together.