Verifying a signature

I bought a coy of The Apprenticeship of Duddy Kravitz yesterday and when I got it home i saw the author’s name (Mordecai Richler) written on the title page, but I have no way of knowing if it is really his signature. How would I go about finding out?

The first thing I can think of is to compare it to a known Richler signature.

However, a Google search turns up nothing.

I think I would send a photocopy to the publisher’s public relations office; perhaps they can find something Richler signed such as a contract or letter or something.
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I found it on bing. Will compare when I get home.