It is very simple to find an illustration without name: copy the illustration from card and store it. Then you can upload it to google picture search. You will get the original very quickly.
Yes, that often works quickly. A more thorough search can be done with
www.tineye.com (which I used in this case).
But for this image it took some extra work, since almost all the search results were for Wallpaper sites or other unattributed images (as Asper mentioned above). Eventually I found one that referenced a stock photography site (Thinkstock), and then moved my search there. But that site didn't support uploading an image to search their stock, which led to phase two, searching based on descriptions of the scene (Tuscany, landscape, etc.).
This particular location, a stunningly beautiful olive farm in Tuscany, Italy, has been photographed by
many professional photographers. So I had to weed out images by other photographers who used slightly different perspectives and times of day. I finally found several images from the exact angle, with the little bales of hay to the left of the house in the precise configuration. And then found the one he took that has the light on in the house, and the right sunlight! From the very brief attribution info on the stock photo site, I was able to find the photographer's own website, his full name, etc.