For more than 200 years, U.S. post offices have served as the heart of all sorts of communities. But with mail volume declining and fewer people using stamps and envelopes, the future of the institution is threatened.
Reporting from Los Angeles and Loma Mar, Calif. -- Carmen Pimpton loves simply walking across South Spring Street to get to her local downtown Los Angeles post office, where she frequently shows up in her comfiest clothes to send Avon products to Arizona, Nevada and Sacramento.
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