The history of the United States Postal Service is rooted in a single, great principle: that every person in the United States – no matter who, no matter where – has the right to equal access to secure, efficient, and affordable mail service.

• Delivery: Monday through Saturday since 1863 PDF | RTF
• City Delivery PDF | RTF
  
  • Deliveries per Day PDF | RTF
• Rural Free Delivery PDF | RTF
  
  • First Rural Routes by State
• Postal Service Mission and "Motto" PDF | RTF
• Santa Letters: Gateway to Kindness PDF | HTM
• State Abbreviations PDF | HTM
• Universal Service and the Postal Monopoly: A Brief History PDF | TXT
• Past Postal Programs
  
  • E-COM, Electronic Computer Originated Mail PDF | RTF
  • Mr. ZIP PDF | RTF
  • Postal Savings System PDF | RTF
  • Telegraph: Early Postal Role PDF | RTF
  • V-Mail PDF | RTF
• Unique Deliveries
  
  • Hope Diamond Delivered by Mail PDF | RTF
  • A Letter, a Lad, and a Lizard PDF | RTF