Section 11

When any postal article is delivered to the Department and has thereby become liable to postage and evidence is adduced to the satisfaction of the Postmaster General that such article has been delivered to the

Department by mistake, the Postmaster General may cause such article to be opened or otherwise examined in the presence of an officer of the

Department and may return the same without charge to the person interested unless such article shall contain any letter or manuscript liable to postage, in which case the Postmaster General shall retain the article until the full rate of postage upon such letter or manuscript has been paid thereon.

Post Office 16

Unpaid and Refused Postal Articles