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- Switzerland319
- United States. Congress. House160
- United States. Department of State149
- United States123
- Wirz, Heinz114
- Electronic Enlightenment Project, issuing body93
- Switzerland, enacting jurisdiction93
- Karl Baedeker (Firm)88
- Switzerland. Bundesamt für Statistik84
- Adam Matthew Digital (Firm), digitiser66
- United States. Congress. Senate44
- Barth, Karl, 1886-196842
- Switzerland. Eidgenössisches Statistisches Amt42
- France41
- Töpffer, Rodolphe, 1799-184641
- Geneva (Switzerland). Musée d'art et d'histoire40
- Switzerland. Bundeskanzlei, issuing body40
- Datamonitor (Firm)39
- Switzerland, author39
- Bullinger, Heinrich, 1504-157538