The Institute of Advanced Legal Studies Library is one of the largest law research libraries in Europe. It contains excellent holdings on European and international law, as well as primary sources for legal history dating from the 16th century onwards. There are significant collections of Romance language material regarding the law of the European Union and individual European and Latin American countries (particularly France, Italy, Argentina and Brazil). There is also a significant amount of French language material pertaining to Quebec and the Quebec independence movement.

The Institute of Classical Studies Library contains some scholarship in Romance languages on Roman and Hellenic history. Although written in English, manuscript accounts of the travels of 18th- and 19th-century scholars to Italy may be of interest to researchers. These are accessible through Senate House Library special collections and can be found in the archives and manuscripts catalogue.