Alaska, Hawaii, Guam, Tetuila, the Philippines and Porto Rico are regarded as insular or territorial possessions of the United States, and are entitled to the same postal rates.
STAMPS
Postage stamps may be purchased at any United States post office, or at any place authorized to sell them.
Anyone may sell postage stamps as he would any other personal asset.
If stamps are bought to be enclosed in a letter, they should never be of a higher denomination than twos and ones, as they are easily disposed of.
Letters should always be stamped on the upper right-hand corner of the envelope.
Packages should be stamped in the same way and on the addressed side.
The using of cancelled stamps is a felony.
Foreign stamps have no value on letters or parcels mailed in the
United States.
A domestic, unstamped letter will not be forwarded.