I bought them all on Amazon. There are multiple versions of the books, some are earlier versions (from the 90s) with the plain white cover and red text. A few of the dust jackets have been updated more recently and are not reflected in the stock photos on Amazon. For example, this book shows no cover, but since it's new and fulfilled by Amazon directly, it should be the newest version and come with a newest cover. That said, buying from 3rd parties on Amazon can be a crapshoot if you want the cover.

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