As Ian readily admits, there are some typo's etc in the books, but the main reaon for incorrect data is that it was "based on information available at the time". The expansion of the internet and the vast number of global collectors have now made much new information, particularly documents, available.

It s easy to criticise any book, the hard part is research & writing the book and getting it 99,99% correct.

As Peter Laidlericon once commented "once someone has read your book they now know more than you do - they have taken everything you have given them, to which they have added their own little kernel of knowledge"