Book II contains the whole collection of basic treaties, in their original ver­sions, and those treaties which successively amended the basic treaties I Volume I), together with instruments relating to the various accessions to the Communities (Volume II).
Tá le fáil i Mórleabhar II cnuasach iomlán na dtéacsanna bunaidh ina leaganacha bunaidh agus na gconarthaí a rinne iad a leasú as éadan a chéile (Imleabhar I) mar aon leis na hionstraimí a bhaineann leis na haontachais éagsúla leis na Comhphobail (Imleabhar II).