"Perhaps a Big-tooth Aspen populus grandidentata https://www.minnesotawildflowers.info/tree-shrub/big-tooth-aspen and http://www.adirondacklifemag.com/blogs/2012/09/25/legend-of-the-fall/"
Other commenters came to the same conclusion.
So, D.Ann, we would like to reward you with a free screen of this leaf (or any other small screen of your choice from the Etsy shop). Please contact us at email@example.com so we can send it off to you. Thanks for your help! And thanks to everyone else who commented as well.