I had not realized just HOW mini these books are. Yes, each book features 4 women -- and literally each woman has an image on the lefthand page and a simple sentence split into 4 lines of text on the righthand page.
I do appreciate that each book contains a mix of races/ethnicities and nationalities -- it's not all white and/or USian women.
"Hillary Clinton ran for office and proved that girls can be in charge!" is bit rough to read after the November 2016 election -- and honestly I felt uncomfortable with the deployment of "proved" in any text (thankfully it's not all of them, but it's 1-2 per book). First of all, dominant culture will often accept exceptional members of minority/oppressed groups as exceptions without changing their mind about the capabilities of members of that group generally. And secondly, this framing implicitly privileges the dominant group -- when Lucille Ball "proved that girls can make you laugh," was that somehow new information to girls and non-binary folks whose female friends had been making them laugh for generations? I get that the text is intentionally very simple, and that other verbs the books use like "showed" have similar problems, but generally I just wish the books had found ways to highlight these women's accomplishments without positioning them as like the first of their kind.