"A long, long time ago, before email and texting, the mail was delivered in a much slower way-it was called Snail Mail (because some thought it was delivered by a snail). Although it took much longer, everyone agreed that letters were a little more special when they were delivered by Snail Mail. They might be handwritten. They might include a drawing. They might even contain a surprise inside! One such letter was sent by a Girl to the Boy she loved, and it was up to four special snails to deliver her card across the country. The snails trek across the country-through desert heat and dangerous blizzards, across mountains and plains, through cities and forests-and along the way, they find that taking time to slow down and look around makes the journey all the more beautiful."--Publisher's annotation.