The fourth volume of this catalogue focuses mainly on Dutch and Flemish oeuvres of the 17th century and includes 219 paintings and two drawings. of which 173 are Dutch and 48 are Flemish. They include pictures by Rembrandt, Rubens, van Dyck, ter Borch and Ruisdael. There is also an introductory essay, which explores 19th-century taste as it is reflected in the selection of Dutch and Flemish pictures in the Wallace Collection.