- Postmarks.org: Pictures of post offices in Puerto Rico
- USPS: 00623 Post Office Hours and Locations
- Shipgooder.com: ShipGooder compares shipping rates for FedEx©, UPS©, DHL©, USPS©, and others. The differences in rates may surprise you!
- Postalnews.com: The Daily News Digest of the Postal World
- PostalMag.com: Online News for Postal Employees
- PostalReporter.com: Connecting Postal Employees to News and Information
- National Postal Museum: At the Smithsonian
- The Mailbox Locator helps you find USPS collection stations (blue mailboxes) and post offices in your area.
Every listing contains location information (most with maps) and scheduled pick-up times for each mailbox.
Sites that link here include:
Postal News Network,
Good Hard Working People,
10 S. Boulevard,
Librarian's Internet Index,
Glenview Public Library,
WRAL TV, North Carolina,
Tech News Watch,