Institute for Historical Research (University of London)
Contains a selection of curated links to online research resources that can be used for Master’s dissertations, as well as historical research of all kinds.

EHPS: European History Primary Sources (European University Institute)
Browse digital repositories by country, language, period, subject, and type of source.

Agricola – Lähteille
Links to a wide range of research resources (mostly in Finnish or sourced from Finland).