Their magic tree house takes Jack and Annie back to retrieve a lost story in ancient Greece, where they witness the original Olympic games and are surprised to find what girls of the time were not allowed to do.

"When Brystal Evergreen stumbles across a secret section of the library, she discovers a book that introduces her to a world beyond her imagination and learns the impossible: She is a fairy capable of magic! But in the oppressive Southern Kingdom, women are forbidden from reading and magic is outlawed, so Brystal is swiftly convicted of her crimes and sent to the miserable Bootstrap Correctional Facility. But with the help of the mysterious Madame...

Although P.J. and his friends refuse to let Donna and Honey Bunny go camping with them because "camping is not for girls," the girls follow and get proof that camping is hard work even for boys.

In 1925, fourteen-year-old Ida Bidson secretly takes over as the teacher when the one-room schoolhouse in her remote Colorado area closes unexpectedly.

Princess Sofia wants to participate on the Royal Prep's Flying Derby team but it's only for boys. Sofia perseveres and practices hard, eventually winning the race and showing everyone that princesses can ride, too.

Annoyed that Sister Bear always beats them at baseball and other "boy" type activities, her brother and the other male cubs try to exclude her from their new club.

As the only passenger, and the only female, on a transatlantic voyage in 1832, thirteen-year-old Charlotte finds herself caught between a murderous captain and a mutinous crew.

"When Hilary Westfield escapes Miss Pim's finishing school to join a misfit pirate crew, she embarks on an unexpectedly magical swashbuckling, plank-walking, searfaring journey"--

In 1969 twelve-year-old Mimi and her family move to an all-white town in Vermont, where Mimi's mixed-race background and interest in "boyish" topics like astronomy make her feel like an outsider.

"Lupe Wong is going to be the first female pitcher in the Major Leagues. She's also championed causes her whole young life. Some worthy ... like expanding the options for race on school tests beyond just a few bubbles. And some not so much...like complaining to the BBC about the length between Doctor Who seasons. Lupe needs an A in all her classes in order to meet her favorite pitcher, Fu Li Hernandez, who's Chinacan/Mexinese just like her. So when...