A 300-year-old family-held drawing book has reappeared in public, and it is filling in part of the record around a largely forgotten Dutch artist.

Amsterdam’s Rijksmuseum is showing the Van Eeghen Drawing Book for the first time in 91 years after the Van Eeghen family donated it to the museum. The family had owned and preserved the book for more than three centuries and donated it to honor the late C.P. van Eeghen, who traced it to Rombout van Uylenburgh and his workshop in 2013.

Museum director Taco Dibbits called Uylenburgh “a fascinating artist of whom very little work has survived.”

Uylenburgh was born around 1580. His family moved from Leeuwarden to Kraków, then the capital of the Kingdom of Poland, where they lived until 1596. He later became a court painter, while his brother Hendrick became a noted art dealer.

In 1612, Uylenburgh joined the Dutch community in Danzig, now Gdańsk, where he became known in particular for his grisaille paintings. After his death around 1627, he fell into obscurity. His family remained prominent. His cousin Saskia van Uylenburgh married Rembrandt van Rijn in 1634.

The book’s binding reads “Art book for Reyer Claessoon” in Dutch. According to the source article, Uylenburgh appears to have met Claessoon, a merchant and fellow Mennonite, while in Danzig.

Inside are 30 full-page biblical scenes. Some are drawn on blue paper. The Rijksmuseum said the colours remain vivid because the works were rarely exposed to light. The book also contains scribbles, signatures and small sketches.

The Van Eeghen family acquired the book in the 1700s, though historians do not know exactly how. A Rijksmuseum representative said it was “probably because the family were Mennonites, just like the artist and Reyer Claessoon.”

For years, the maker of the drawing book was unknown. About 20 years ago, C.P. van Eeghen noticed similarities between its illustrations and Rest on the flight to Egypt, dated about 1610 to 1625, a drawing in the Rijksmuseum collection.

When Netherlands Institute for Art History curator Erik Löffler first published van Eeghen’s attribution in 2013, it led to the identification of a series of Uylenburgh paintings in the collection of Amsterdam’s Museum Ons’ Lieve Heer op Solder.

Questions remain around the book. The exact circumstances of its creation and use are still unknown. So are the artists behind 15 works not attributed to Uylenburgh’s workshop.

The public has only seen the drawing book once before, at Amsterdam’s Museum Fodor in 1935. It is now on view through November 29 in the Print Cabinets at the Rijksmuseum, which also owns Uylenburgh’s only two other known surviving drawings, alongside loans from the Rembrandt House Museum.

Read more from Artnet.