If you’ve spent any time online since Friday, you already know that, after decades of activism, gay marriage is now legal in all 50 states in America. Here are three picture books to help celebrate this historic moment, plus a link to list with three more.

1. King and King by Linda de Haan and Stern Nijland

A bossy queen insists that her son must get married, but the princesses that parade through aren’t quite what the prince is looking for.

2. And Tango Makes Three by Justin Richardson and Peter Parnell, illustrated by Henry Cole

Two male penguins pair up to raise a penguin chick. Inspired by a true story from the Central Park Zoo.

3. The Case for Loving by Selina Alko, illustrated by Alko and Sean Qualls

Mildred and Richard Loving just want to raise their family in their hometown in Virginia, but they can’t, because Mildred is black and Richard is white. This book (which I reviewed in more detail in February) is about the family at the center of the Supreme Court’s 1967 decision ending bans on interracial marriage. That case set the precedent for Friday’s ruling.

4-6. The Human Rights Campaign has a blog post of tips for talking to children about marriage equality. It includes recommendations for three books to start the conversation. I haven’t read any of those yet — let me know if you have!