BBC News
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image copyrightTeslim Omipidan
In our series of letters from African journalists, novelist and journalist Adaobi Tricia Nwaubani looks at a young man's passion for the past.
There are many events in Nigeria's history which 23-year-old Teslim Omipidan wishes every Nigerian to know.
For example, in October 1961, a young American woman, Margery Michelmore, was attending Peace Corps training at the University of Ibadan in south-western Nigeria.
A postcard she wrote to a friend back home described the "squalor and absolutely primitive living conditions" of her new environment.
image copyrightThe LIFE Images Collection via Getty Images
image captionMargery Michelmore's infamous postcard sparked an international incident in 1961