The three landmark titles will be issued in sleeves featuring replica artwork through Mercury/USM on 24 January 2020.
The group took a big step towards their later prominence with the 8 November 1974 release of their fourth album.
Thin Lizzy had given themselves quite an act to follow when their sixth studio album Johnny The Fox was released on 16 October 1976.
Scottish rock bassist Jimmy Bain, revered for his work with Rainbow, Dio and in many other outlets, has died at the age of 68.
The band's eighth studio album hit the US top 40 and went gold in the UK.