Pictures of him hard to erase years afterwards (6)
I believe the answer is:
images
'pictures' is the definition.
('image' can be a synonym of 'picture')
'him hard to erase years afterwards' is the wordplay.
I cannot quite see how this works, but
'years' could be 'ages' (I've seen this in another clue) and 'ages' is located in the answer.
The remaining letters 'im' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'of' acts as a link.
Can you help me to learn more?
(Other definitions for images that I've seen before include "'Reflections, likenesses (6)'" , "Pictures; metaphors" , "Mental representations or figures" , "Likenesses, representations" , "Representations or reflections" .)