As a teenager, and with a parent in the broadcasting industry, I was fascinated with radio and television. A hobby of mine was collecting QSL cards from around the world. I collected QSL cards from AM, FM and shortwave radio stations. The other day, I was looking in my archives for something else, and I found the QSL card from Radio Peking, posted on September 30, 1972. The letter, typed on onionskin paper and in perfect English, invited me to listen to some of its special programs, which included “Selected Readings from Mao Tsetung’s Works”, and “Selected Readings from the Works of Marx, Engels, Lenin and Stalin”. Later, I received some English-language magazines. My progressively liberal parents, who were young adults in the early 1950’s—during the ‘red scare’ era—tended to look a little askance at these deliveries.

Google Images has a collection of QSL cards.