I couldn't find any online material, and I don't 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.
Hesperian