Johannes Gerardus Keulemans

Rufus-necked wood rail Johannes Gerardus Keulemans

Yellow-crowned euphonia and fulvous-vented euphonia Johannes Gerardus Keulemans

Tapir Johannes Gerardus Keulemans

Variegated squirrel Johannes Gerardus Keulemans

Northern royal flycatcher Johannes Gerardus Keulemans

Howler monkey Johannes Gerardus Keulemans

Portrait of Joannes Fredericus Gronovius, Philologist and Jurist, Professor in Leiden The Netherlands Jan Maurits Quinkhard

Hendrik Harmen Klijn, 1773-1856, Poet Jan Willem Pieneman

Hummingbirds Johannes Gerardus Keulemans

Johan van Beaumont. Colonel in the Holland guards and commander of Den Briel Jan Mijtens

Mrs Johannes van Brugh c.1720 Gerardus I Duyckinck

Portrait of a woman, Gelderman Godfried de Jong

Portrait of Johan van der Does the Younger, Librarian in Leiden The Netherlands Arnoud van Halen

Portrait of Johan Wittert van der Aa Gerard Dou

The Casemates of Naarden in 1814, The Netherlands Pieter Gerardus van Os

Portrait of Johannes Polyander à Kerckhoven, Professor of Theology in Leiden The Netherlands Arnoud van Halen

Portrait of Adelbertus Gerbrandsz. Eggius chaplain in Haarlem Jan van de Velde II

Portrait of Hans Wachtmeister, Count of Johannishus, 1690 Anonymous

Johan de Witt, Grand Pensionary of Holland, 1643-1700 Jan de Baen

Portrait of Johan Willem Parker, Lord of Saamslag, Geersdijk, Wissekerke, Cats and Soelekerke, Burgomaster of Middelburg, Deputy of Walcheren in... Jacob Jan Nachenius

Portrait of Johan de Witt, Grand Pensionary of Holland Jan Maurits Quinkhard

The Magpie Johan Gerard Keulemans

Johannes Kepler, c.1612 Johann or Hans von Aachen

View of Haarlem and the Haarlemmer Meer, 1646 Jan Josephsz van Goyen

Portrait of John Spiljardus Anonymous

Leidseplein Gerrit Hendricus Heinen

View of the Grote Markt in Haarlem Gerrit Adriaensz Berckheyde

Portrait of Johan Servaes van Limburg, Dean of the Chapter of Sinte Marie in Utrecht Cornelis Janssens van Ceulen II

Portrait of Gerrit van der Pot, Lord of Groeneveld, Art Collector in Rotterdam Johan Bernard Scheffer

Portrait of the Advocate Johan van den Sande Sydtse Rinnerts Arumtsma

Johannes Erasmus Kindermann Daniel (after) Preissler

Equus Germanus Jan van der Straet

Portrait of Johan Gerritsz van Schoterbosch Cornelis Engelsz.

Johannes Kepler, German astronomer, early 17th century, (c1903) Unknown

Johannes Cornelis van Pappelendam Johan Heinrich Neuman

The Regents of the Spinhuis and Nieuwe Werkhuis, Amsterdam, 1669 Karel Dujardin