Where do letters and packages go when they are mailed? The post office of course! Developing readers learn about the post office in this low-level search-and-find beginning reader. Enter the lobby where you can buy stamps or send a package. Big machines sort letters by address. The mail workers make sure each piece of mail gets delivered in a timely manner. Early readers discover P.O. boxes, mail trays, and more while learning about post offices. A search-and-find book about post offices reinforces new vocabulary to build reading success while close-up images captivate young audiences. A great early STEM book to inspire learning about communities on field trips for kindergartners and first graders.