Katie Kawa 
My First Trip to the Post Office [PDF ebook] 

This engaging book explains how a letter gets from one person to another in a way that beginning readers will find educational and enjoyable. Using a fictionalized approach, this book follows a child’s letter from the day it is written to the day it is delivered. Through a relatable story, bright illustrations, and accessible text, young readers follow along as the letter is taken to the post office and goes on a journey to its recipient.