The (mostly mythical?) story is that Betsy Ross made the First American flag. Here she is as she was depicted in an old public domain stamp.
This is a completely free image Betsy Ross that you can download, post, and use for any purpose.
Image License: CC0 No Rights Reserved
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission, and at no cost. This image is completely free.