Sources I've used from newspapers

These newspaper headlines i have obtained from the internet from, Sheffield Star which was the local newspaper to Hillsborough. Liverpool Echo, the newspaper of the supporters who died,both of these articles were published a few days/ a week after these disaster. Two newspaper articles from The Sun, one from 1989 and one from 2012.

I would come to the conclusion that me obtaining these newspaper articles would be seen as reliable, because the newspaper headlines were the ones which were published at the time. 

However what is questionable is the reliability of the content of the newspapers, for example The Sun's 'the truth' headline, which is what i will look to establish this in my dissertation.