Next time you sit down to write a letter, wouldn't you prefer to have illustrations of historically badass women on your card? Meant for children and adults alike, these Rebel Girls postcards not only are female-positive and provide interesting history on legendary women, but also have individual art styles on each one, making every card specific to the artist who created it and the historical figure represented on the card. Stored in a neat little box and catagorized by the feats of each woman ("Champions", Pioneers", "Leaders", etc.), this set of postcards also offers timelines and quotes separate from the cards, so you have something for yourself when you're done mailing out all these female heroes from history.