SketchUp Version:Hi, I just have a doubt abut how all the copyright thing works.

I created a bartender guide and I took a couple of images from Google Warehouse because I thought it was free to use but now that I am registering my work with the U.S Copyright Office I'm not so sure about it.

So I would like someone that explains me if I can do that or can give me the contact information of the person or team to ask them how this exactly works.

Thank you very much.