This page provides a few larger-format photos for use as computer desktop wallpaper (or for any other use). The copyright restrictions are listed at the end of the page.
The copyright notice, aka the fine print:
I'm retaining the copyright on these larger-format images (i.e., greater than 1920 by 1080 pixels), including the right to revoke use of the images if in my opinion, you used them in hurtful ways. Otherwise, you're free to use and modify them for any personal non-commercial use. For any other use, ask for permission first. I'm likely to grant it. Thanks.