The hidden date for this stamp can be found on the dove.
The United Nations General Assembly recognizes 1990 as International Literacy Year. Canada Post Corporation, a major carrier of the written word, also embraces this cause; in addition to issuing a commemorative stamp, it has introduced a major corporate program consisting of a number of initiatives to promote literacy and to encourage Canadians to support the cause of literacy. By issuing this stamp, and using its visual element as the basis of Canada's literacy symbol, the Corporation is supporting national and international action to combat illiteracy. Debbie Adams, a Toronto graphic artist, created a symbolic bird in flight comprised of symbols, numerals and letters from several different alphabets. It represents the sentiment that literacy leads to freedom.