1981 was proclaimed by the General Assembly of the United Nations to be the International Year of Disabled Persons.
Although many countries issued stamps featuring various disabilities that year, they were by no means the first stamps issued regarding the subject.
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Those in question feature a sport whose participants must not only have a considerable amount of stamina but also excellent navigational skills.
The sport, orienteering, began in Sweden in the late 19th Century and involved the crossing of unknown land with the aid of a map and a compass.
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And there are hundreds!
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