Can you recommend some historical fiction or non-fiction graphic novels for children interested in learning?

For historical fiction and non-fiction, 'Nathan Hale's Hazardous Tales' series is excellent, presenting historical events in a humorous and engaging graphic novel format. 'The Invention of Hugo Cabret' by Brian Selznick, while not strictly a comic, uses illustration extensively to tell a story set in early cinema. 'Anne Frank's Diary: The Graphic Adaptation' offers a powerful and accessible way to learn about her life. For non-fiction, 'Facts of Life: The Complete Collection' by Erika Mann is a unique look at societal changes. 'March' by John Lewis, while more mature, is a powerful memoir in graphic novel form that can be adapted for older kids.