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Summary
Photographs and text describe how the United States Postal Service collects, processes, and delivers mail. Full description
Series: How it happens
How it happens at the boat factory
How it happens at the candy company
How it happens at the post office
How it happens at the truck plant
How it happens at the ATV plant
How it happens at the building site
How it happens at the cereal company
How it happens at the fireworks factory
How it happens at the motorcycle plant
How it happens at the pizza company