The Postal Service once transported an entire bank through the mails by Parcel Post. In 1916, in order to save transportation costs, a merchant named W. H. Coltharp sent a bank in small packages through the mails by Parcel Post from Salt Lake City to Vernal, Utah.
Although the transportation of the 80,000 bricks over the 427-mile route caused some problems for postal authorities (at the time no road existed from Salt Lake City to Vernal), not a single brick was lost.
When Postmaster General Albert Burleson learned of this incident, he instructed postal regulations be rewritten to prohibit such large mailings.
His letter announcing these revisions, ended by stating, "It is not the intent of the United States Post Office that buildings should be shipped through the mail."
Even today, customers occasionally send their belongings by mail in order to save moving costs.
But since 1916, no buildings have entered the mailstream.