Dr. Norbert E. Middelkoop is senior curator of paintings, prints and drawings at the Amsterdam Museum and the former curator of old masters at the Frans Hals Museum. Rudi E.O. Ekkart is the former director of the RKD – Netherlands Institute for Art History in The Hague, the Netherlands.

• Foreword - Marrigje Rikken, Introduction - Norbert E. Middelkoop, Iconography, 1. Frans Grijzenhout - The Religion(s) of Frans Hals, 2. Christopher D.M. Atkins - Peeckelhaering and the Performance of Race, 3. Marike van Roon - Painted Stitches: Embroidery and the Paintings of Frans Hals, 4a. Liesbeth Abraham - More than Decoration (I): The Map in Frans Hals's Regents of St Elisabeth's Hospital Identified, 4b. Koos Levy-van Halm - More than Decoration (II): The Map in Frans Hals's Regents of St Elisabeth's Hospital Interpreted, 5. Pieter Biesboer - Willem or Balthasar? The Portrait of a Member of the Coymans Family by Frans Hals Reconsidered, 6. Norbert E. Middelkoop - Frans Hals's Portraits of Painters: A Reconnaissance, Technique, 7. Mireille te Marvelde, Liesbeth Abraham, Herman van Putten and Michiel Franken - A Box Full of Research: Early Twentieth-Century Documentation on the Scientific Investigation and Restoration of the Eight Group Portraits by Frans Hals, 8. Anna Tummers, Arie Wallert, Robert G. Erdmann, Katja Kleinert, Babette Hartwieg, Dorothy Mahon, Silvia Centeno, Roger Groves, Andrei Anisimov and Joris Dik - The New York Malle Babbe: Original, Studio Work or Forgery?, 9. Claus Grimm - Looking at Frans Hals in the Digital Age: The Benefits of Detailed Comparisons, 10. Herman van Putten, Liesbeth Abraham and, Mireille te Marvelde - Lost Lines: New Light on the Painting Technique of Frans Hals, 11. Liesbeth Abraham - Unfinished Business? Comparing Hals's Late Regents and Regentesses, Reputation, 12. Emilie den Tonkelaar - From a Parisian Dining Room to a German Private Museum: Frans Hals in the Collections of Count André Mniszech and Marcus Kappel, 13. Michiel Franken - 'Because you simply cannot argue about art with a chemist': Scientific Research of Frans Hals Paintings in the Netherlands during the 1920s, 14. John Bezold - Frans Hals Connoisseurs and Exhibitions: From Thoré to Today, Bibliography, Index