I was way ahead of my time on intellectual property ideas

I just spent the last ten days helping my parents start to prepare to move out of their house in New York. We spent a lot of time sorting through the accumulation of a lifetime, deciding on what goes and what doesn't.

One of the things we unearthed was a collection of my sixth-grade homework. And right there, on the flyleaf of my science notebook, titled "the Universe", it says:

Uncopyright 1965

Any part of this book may be published without author's consent.

complete with a little u in a circle.

Is that cool or what?