Eggs by Mail
It goes on to say, "For much of the early history of the Post Office Department (POD), patrons were required to pick up their mail from the local post office. Many rural families lived miles from the closest town. They were not able to receive free mail deliveries, and were thus fairly isolated from current events and technological innovations. With the introduction of Rural Free Delivery (RFD), an official part of the postal system, by 1902 and parcel post in 1913, rural families were no longer so isolated. With parcel post, even small family farms could afford to sell their fresh produce, such as eggs, to consumers in nearby cities."
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