Rain Rain

Pinterest is quite wonderful.  It opens you up to an entire world of beautiful images and amazing resources.  I love how you can click on most images and be brought straight to the source- you learn where to buy it, how to make it, or who created it.  Sometimes, however, you come to a dead end when you REALLY want to find the source... like with this amazing image:

It just puts a smile on my face.  I kind of love it.  lots.  but I have no idea where to get it- HELP!  Any idea where to find it?  who it's by?  have you seen it somewhere else??