- International Institute of Social History (IISH)
The International Institute of Social History (IISH) was officially established on November 25, 1935, but its history goes back to the 1920s.
- Labour History
A good overview of websites on labour history (Virtual Library Labour and Business History) can be found at the website of the International Institue of Social History
- Wages in the past
Data on wages in the past: http://www.iisg.nl/hpw/index.html