Gretchen Peterson has announced City Maps: A Coloring Book for Adults. Adult colouring books have rapidly become a Thing; Peterson once wondered why there weren’t any map colouring books (which is a damn good question: the closest I’d been able to find is Splendid Cities) so she made one herself. “I’m excited about this because normally I make maps that are more scientific, regulatory, or otherwise government oriented but this is a collection of maps for everyone. And what’s more, everyone can color them just the way they want to!” Available now from Amazon.