I couldnt find any online material and I dont have anything in print either Yet I believe the statement to be true The ideal source would be  And perhaps also  The problem we have here is that the original article was written by Colebatch himself and is dreadfully biased in his favour yes the only person with an interest in redressing that imbalance is someone with an axe to grind who is more interested in cutting Colebatch down than actually improving the article This is not the way to go about writing an encyclopedia