1. The postal history of the Admiral Issue.
2. The postal stationery in use during the Admiral period.
The Admiral Issue covered a period in which there were some major changes in postage rates. In 1915 the 1c War Tax was introduced, which was required to be paid on all domestic mail and mail to the United States. Thus the domestic rate for regular letters rose from 2c to 3c, while the rate for postcards and printed matter rose from 1c to 2c. In 1926, the War Tax was ab…