Printing the correspondence column?

I believe the answer is:

letterpress

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'printing' is the definition.
(letterpress is a kind of printing)

'the correspondence column?' is the wordplay.
'the correspondence' becomes 'letter' (I've seen this before).
'column?' becomes 'press' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'letter'+'press'='LETTERPRESS'

Can you help me to learn more?

(Other definitions for letterpress that I've seen before include "Text, not illustrations; printing from raised type" , "Printing technique" , "reading matter" .)

I've seen this clue in The Irish Independent.

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