The Super Mario Maker artbook was released alongside limited editions of Super Mario Maker. It contains artwork, sprites, and concept art from the game, as well as codes to enter in the game's digital manual to unlock hidden videos. The front cover shows a ? Block and Brick Block in the Super Mario Bros. style, the former of which connects through the spine to the back cover, which includes a Hard Block in the same style.
The above text is from the Super Mario Wiki and is available under a Creative Commons license. Attribution must be provided through a list of authors or a link back to the original article. Source: https://www.mariowiki.com/Super_Mario_Maker_(artbook)