Therese M. Shea 
20 datos curiosos sobre la Constitución de Estados Unidos (20 Fun Facts About the U.S. Constitution) [PDF ebook] 

The U.S. Constitution is the oldest, shortest, one-document constitution in the world, but this ground-breaking document is much more than that. It proved to be the driving force behind the fight for independence all over the world. Readers are sure to be surprised and entertained by the numerous fun facts featured in this book. The text is accompanied by helpful graphic organizers, historic images, maps, and photographs of the Constitution itself.