You were right. In fact you can check easily with google image upload and search service. It allows to identify similar images and the best guess to any image. For this case, you can check here:
Thanks, Franck. I do know about google image search but the picture has to be posted online first in order to do that. I suppose I could post an unknown picture, do a google image search, find out what it is, and then go back and put in the title after.
Wherever I found this image said it was by Andrew Wyeth but I’m not sure.
MATTHEW'S ISLAND 
Dear Matt, greetings from Paris !
You were right. In fact you can check easily with google image upload and search service. It allows to identify similar images and the best guess to any image. For this case, you can check here:
https://www.google.fr/search?hl=fr&tbm=isch&q=Andrew+Wyeth&oq=&gs_l=
just click on the small photograph icon and upload the image you want to check.
there are other sites who do that too.
all the best.
franck
Thanks, Franck. I do know about google image search but the picture has to be posted online first in order to do that. I suppose I could post an unknown picture, do a google image search, find out what it is, and then go back and put in the title after.
There’s also Tin Eye:
https://tineye.com/extensions
It isn’t always the easiest way to locate a picture, but I find I turn to it frequently.