Clad in a white shirt, dhoti and his trademark yellow shawl, the 93-year old five-time Tamil Nadu chief minister went around the exhibition at the daily's office premises on his wheelchair.
Karunanidhi, who is wheelchair-bound since 2010, did not make a public appearance since October, 2016 as he was ill.
He was getting medical treatment at home and did not attend any public event as per doctors' advice to avoid any possibility of infection.
Karunanidhi was accompanied by his son and DMK working president M K Stalin and former state ministers Duraimurugan, E V Velu and Ponmudi, besides his other family members.
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The expo catalogues the journey of 'Murasoli', which was founded by Karunanidhi in 1942.
The daily celebrated its 75th year jubilee in a grand fashion in August when top actors Rajinikanth and Kamal Haasan attended the event among others.
Karunanidhi fell ill in October, 2016 due to a drug- induced allergy.
The veteran leader was admitted to the hospital for "optimisation of nutrition and hydration" in the first week of December and later, due to a throat and lung infection.
He had undergone tracheostomy, a procedure to optimise breathing.
Congress vice-president Rahul Gandhi had called on the DMK patriarch at his residence in December, 2016.
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