Bob Haak (art expert)

In 1968 he co-founded the Rembrandt Research Project (RRP), together with Josua Bruyn, Jan van Gelder, Jan Emmens, Simon Levie, and Pieter J.J. van Thiel. The project’s aim was a comprehensive study of all of Rembrandt’s paintings and resolving the uncertainties surrounding the authenticity of many paintings, to which several scholars had turned their attention. That was the same year that Horst Gerson published his Rembrandt catalog raisonné, 1968, in which he drastically reduced the number of Rembrandt paintings to 420. The next year, in 1969 Gerson published an update of Abraham Bredius' 1935 catalog of 611 Rembrandt paintings with his attributions based on connoiseurship. Haak responded in 1969 by publishing his bestselling work Rembrandt : His Life, His Work, His Time in three languages. Though this book only included less than a third of the paintings mentioned in Bredius' 1935 work, it also included several works by contemporary artists and several drawings and etchings by Rembrandt that had previously not been published. It changed the way Rembrandt scholars viewed his paintings by putting them into the perspective of other contemporary works by Rembrandt and his pupils, whether it be etchings, drawings, or everyday political events. The scholarly rivalry continued during the course of the 1970s, but there was increasing pressure to publish catalogs and the long-awaited results of the RRP were published in three volumes as A Corpus of Rembrandt Paintings between 1982 and 1989.

The declaration that the work was not done however, coming on top of controversies in the art world caused by the publications, resulted in friction in the team. Team member Ernst van de Wetering advocated a different approach based on a holistic study of the paintings, dismissing the age-old ideas of connoisseurship that were seen as being so controversial in favor of using non-controversial forensic techniques as well as archival research and provenance records. Haak was no stranger to the holistic approach in his study of Rembrandt's contemporaries and pupils. In 1982 he published The Golden Age: Dutch Painters of the Seventeenth Century, which was equally as well-received as his first book on Rembrandt and earned him the Karel van Mander prize in 1985.

However, differences of opinion within the team came to a head in 1993, when Haak withdrew from the RRP, along with Bruyn, Levie, and Van Thiel. They left the further organization of the project to their fellow team member Ernst van de Wetering, who continued to publish another three volumes, finishing with the sixth volume which included a list of 348 autograph paintings in 2014.

Haak was the son of Jur Haak and Jet van Eek. His father was a footballer in the Netherlands national team, and a record high jumper and both parents were teachers at the Montesorri school in Amsterdam. The whole family were active in the resistance during the Germany occupation. In August 1943, Bob was arrested while trying to deliver a Jan Campert book to some family friends. The Nazis raided his parents house that night and, finding falsified documents (though failing to find the two Jewish people in hiding in the house), deported them to separate concentration camps. His mother died of "malaria" in Reichenbach in December 1944, his father died of exhaustion in Sachsenhausen in January 1945.

• Bob Haak in the Dictionary of Art Historians
• Rembrandt; his life, his work, his time, New York : H.N. Abrams, 1969, OCLC 22718