Let's start with the things you can't do.
- You can't claim copyright in photos published before 1925 or in unpublished photos taken by photographers who died before 1950. These photos are in the public domain and free for anyone to copy.
- You can't claim copyright solely based on your ownership of a photo. Purchasing a print is not the same as purchasing the copyright.
- You can't register your report with the Copyright Office unless you declare whether your book contains pre-existing works. Pre-existing works might include your public domain photos, a foreword by a third party, or any previously registered or previously published works that are included in your book. The goal is to show what you contributed (the text).
- You can't require attribution unless you have an agreement such as a license that requires it. (You can sue under the Digital Millennium Copyright Act, however, if the infringer removes copyright management information (CMI).)