Scientific techniques used in color designation and pigment identification, paper making, printing technology.

Dorothy Knapp: Philately and Family is the definitive biography and complete works of the most famous cachet artist in the history of philately. Envelope art ha

I have been collecting stamps for about thirty years and I could not find a handbook, which can help me to understand how I must collect and what I must collect

Postage stamps have evolved quite a bit since Great Britain’s 1840 Penny Black, the world’s first adhesive postage stamp. From simple designs featuring the