What's this?

So... While doing research for an history paper I stumbled across THIS in the front of a book...

I thought "Is that what I think it is?"

So I googled Frank Lloyd Wright's autograph, which gets me this.

And this, as of November, 1953, the year the book was published. (click to enlarge)

That looks promising.

But blue ball point pen doesn't seem like Frank's style... were ball point pens even around in the 50's?

So I googled that, too. Turns out they were. In fact, a new style came out in 1954, which lead to a huge surge in popularity. 1954 is probably around the time this would have been signed... and Frank loved new spiffy technology.

I think this is what I think it is... unfortunately, there's no way to verify if it's real or not. It's either a good fake, or the library has NO idea what it has...

Only one question left: do i "lose" the book and pay a fine... or do I just return it...