Actually, both of these books are available online, "An Introduction to C++ with Design Patterns in Qt 4" can be found at http://www.freetechbooks.com
and "C++ GUI Programming with Qt 4" is available at another site
I didn't link directly to the books because I don't know those sites policies, so just search for the books, they're very easy to find. It's funny, at the other site there's an ads by google section and the ad when I just went there was for Trolltech
If you like the books, please support the authors and buy them.
{edit} removed second link till I can verify it.
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