The European Free Trade Association was set up in 1960 to promote free trade and the economic integration of its members. The current members are Iceland, Liechtenstein, Norway and Switzerland. Previous members (such as the UK and Portugal) have left when they joined the EU.
Some EFTA material can be found on the iDiscover catalogue.
The catalogue shows that there is material at the UL, the Squire (law) and the Marshall (economics) libraries.
There is more material at the UL that has not been catalogued. The classmark is OP.?350 (with the ? varying with the height of the publication).
Issues of the EFTA Bulletin for 1994 are available on ESCOhost Business Source.
The EFTA website has current publications available in their publications section including their annual reports from 2004, bulletins and factsheets.
Annual reports between 1960 and 2003 have been scanned and can be found on this page.
There are two ebooks available on the EFTA Court (click on the book covers - Raven password needed).
The EFTA Court Ten Years On The EEA and EFTA Court:
Decentred Integration
iDiscover also has some links to some open access articles which discuss EFTA.
To find more try searching Google Scholar.