Postmaster-General Holt threatens action over South Carolina's seizure of U.S. Post Office accounts
U.S. Postmaster-General Joseph Holt, one of the Buchanan Cabinet's strongest advocates for defense of federal property in the South, demanded that the U.S. Sub-Treasury in Charleston return the $35,000 it held for the U.S. Post Office that had been seized the week before or faced federal action. He also again threatened retaliation on mail to and from South Carolina should that state interfere with United States postal deliveries. (By John Osborne)
Orville J. Victor, The History, Civil, Political, and Military, of the Southern Rebellion ... Volume I (New York: James D. Torrey, 1861), 129.