Hy 
I am a 29years old artist and I work with different media, from light to images and videos.
Sometimes I work in digital (with photoshop) over some picture I made with my camera, and sometimes I use other pictures, like scans from newspapers ec..
What I do is add colors to the images, merge other images in one ecc..
Finally the work is different from the starting image and have my personal "cut".
I found your images on Wikimedia and I think that the panoramas are really beautiful and perfectly made.
Is possible to take some part of your pictures and work over it? What I need to do?
I ask this because (sometimes!!) I sell my works so I don't want to go over the author of the image.
pleas let me know 
and congratulation again for you beuatiful pictures