Utrecht / Geneva / Jeddah / Paramaribo / Dresden / Mecca / Ottawa / New York / Rotterdam / Paris / The Hague / Berlin / Amsterdam / Vienna / /
Company
Sartorius / Meyer & co / Joh / M. Hensoldt & sons / Instruments Introduction / Hensoldt & sons / /
Continent
Africa / /
Country
Netherlands / South Africa / Congo / Belgium / Russia / /
Event
Person Travel / /
Facility
Museum Boerhaave / Leiden University Library / University Buildings / University Library / Leiden Observatory / Verhaar planetarium / Engelhardt Observatory / Observatory building / Education Museum / /
Dutch government / Leiden University / Netherlands Society for Science and Medicine / Royal Academy / Nautical Almanac Office / Topographical Service / Royal Academy of Sciences / German Navy / army / Ministry of the Interior / German Imperial Navy / Fundamental Star Committee / Ministry of Foreign Affairs / Königliches Astronomisches Rechen-Institut / Leiden University Fund / Geodetic Committee / Department of Colonies / /
Person
F.W. Dyson / J.H. Wilterdink / J.J.A. Muller / Tom Stieltjes / J.J. Hess / Eberhard Enschedé Fayel Gautier Haga / H. Haga / Kam Kapteyn / S.S. Smeding / C. Sanders / G.F. Tydeman / H. Battermann / A. Pannekoek / A.A.W. van Wulfften Palthe / H. Spencer Jones / W.H.M.Christie / Albrecht Backlund Banachiewicz Bilt / Ciel Maps / H.P. Hollis / S.P. L'Honoré / Hendrik / A.J.E.A. Bik / N. Scheltema / J. Weeder / F. Vening Meinesz / J. Woltjer jr. / W. Kapteyn / H. Julius Meinesz / A.J. Sanders / Correspondence / Ernst Bakhuyzen / Van Everdingen / J. Van Breugel / W. Kobold / P. Meesters / P.H. Cowell / van der Star / R.H. van Dorsten / Honoré Naber / David Baneke / C. Van de Linde / J. de Jong / / /
Position
amateur astronomer / physician / professor of astronomy / director of that institute / mathematician / diplomat and amateur astronomer / Official / physicist / Instrument maker / director / geophysicist / correspondent / navy officer / director of the Observatory / observer / /