Norwegian Academy of Sciences and Letters
Europe : Norway
- University of Notre DameAmerica : United States (Great Lakes)
- University of Notre DameAmerica : United States (Great Lakes)
- Europe : Denmark
- Europe : Netherlands
- University of OxfordEurope : United Kingdom
- Asia : Singapore
- National University of SingaporeAsia : Singapore
- New York UniversityAmerica : United States (Mid-Atlantic)
- New York UniversityAmerica : United States (Mid-Atlantic)
- Tamiment Library & Robert F. Wagner Labor Archives, New York UniversityAmerica : United States (Mid-Atlantic)
- New York UniversityAmerica : United States (Mid-Atlantic)