The fourth volume examines all the works attributed to masters with provisional names from the 1470s to the first half of the 16th century (Master of the Joseph Sequence, Master of the Magdalen Legend, Master of the Orsoy Altarpiece, Master of the Saint Barbara Legend, Master of the Saint Catherine Legend, Master of the Saint Lucy Legend, Master of the Saint Ursula Legend, Master of the View of Saint-Gudule, Master of 1473). It was towards 1900 that anonymous works were first grouped, on the basis of stylistic affinities, around certain paintings presenting particular characteristics. Each group is attributed to an anonymous master named after the painting (the eponymous work) which forms the basis for this group. These ensembles serve to give direction to the work of art historians, in the hope of identifying these anonymous painters at a later date. Some of these groups, to which new works have been added over past decades, appear fairly heterogeneous, and merit critical reexamination in the light of modern analysis methods. Like the three previous volumes, it is published in English and abundantly illustrated with colour photographs of the investigated paintings, detail photographs and comparative material. Each of the nineteen paintings has been submitted to exhaustive and detailed examination following a scientific research method which has been fully established over the years. This includes, on the one hand, examination of the supports and the original frames, dendrochronological analysis, infrared reflectography, stereomicroscopic observation, radiographic analysis, ultraviolet fluorescence imaging and, where possible, examination of paint samples and, on the other hand, historical, iconographic and stylistic analysis, dating, attribution and bibliography. Information is drawn from documents in the museum's archives and supplemented with material held at the Royal Institute for the Study and Conservation of Belgium's Artistic Heritage (IRPA/KIK) and the Centre for the Study of Fifteenth-Century Painting in the Southern Netherlands and the Principality of Liege. Each group of paintings attributed to a master with a provisional name is introduced with a short status quaestionis evoking the origins of the grouping and the principal publications relating to it. In their notices on the individual paintings, the authors have based their research on comparing them as closely as possible with the works around which each ensemble is grouped. Certain paintings in the Royal Museums of Fine Arts of Belgium are themselves eponymous works. In these cases the authors have made every effort to document these reference works as thoroughly as possible.

The fifth volume examines all the works painted by anonymous masters. Most works of the 15th and early 16th centuries are not signed. Several of these works have not proved possible to attribute to a known painter or to a master with a provisional name. These works, labelled as anonymous, have been little studied until now, because they are in general thought to be of lesser quality, and because researchers have prioritised the study of more important masters. It is, however, becoming increasingly apparent that these reflect the ongoing production of the time in the Southern Netherlands. Beside the fact that these paintings represent the themes that enjoyed a certain popularity at the time, their study opens perspectives onto the socio-economic context and workshop practice. These paintings could be destined for a broad market and betray different working methods allowing for swift execution in several copies. Furthermore, two of these anonymous works, dating from around 1400 or a little bit later, rank amongst the rare representatives of pictorial production in the Southern Netherlands prior to the technical innovations introduced by the Flemish Primitives. This production is by convention called pre-Eyckian painting.

These volumes propose a renewed way of framing the debate around the history of medieval art and architecture to highlight the multiple roles played by women. Today’s standard division of artist from patron is not seen in medieval inscriptions—on paintings, metalwork, embroideries, or buildings—where the most common verb is 'made' (fecit). At times this denotes the individual whose hands produced the work, but it can equally refer to the person whose donation made the undertaking possible. Here twenty-four scholars examine secular and religious art from across medieval Europe to demonstrate that a range of studies is of interest not just for a particular time and place but because, from this range, overall conclusions can be drawn for the question of medieval art history as a whole. Contributors are Mickey Abel, Glaire D. Anderson, Jane L. Carroll, Nicola Coldstream, María Elena Díez Jorge, Jaroslav Folda, Alexandra Gajewski, Loveday Lewes Gee, Melissa R. Katz, Katrin Kogman-Appel, Pierre Alain Mariaux, Therese Martin, Eileen McKiernan González, Rachel Moss, Jenifer Ní Ghrádaigh, Felipe Pereda, Annie Renoux, Ana Maria S. A. Rodrigues, Jane Tibbetts Schulenburg, Stefanie Seeberg, Miriam Shadis, Ellen Shortell, Loretta Vandi, and Nancy L. Wicker.

In Anonymous Art at Auction, Anne-Sophie V. Radermecker takes the opposing view of the superstar economy by examining contemporary sales of Early Flemish paintings with unknown authorship and the effects of various substitutes for real names on price formation.

The publication of the first in a five-volume scholarly catalogue of the 15th-century southern Netherlandish paintings in the Royal Museums of Fine Arts of Belgium in Brussels is a long awaited event. The museums' rich collection of Flemish Primitives boasts paintings by Rogier van der Weyden, Gerard David, Petrus Christus, Dirk Bouts, Hans Memling and Hieronymus Bosch. It also includes several important works by artists with provisional names from the schools of Tournai, Bruges and Brussels, such as the Master of Flemalle, the Master of the St Lucy Legend and the Master of the Life of Joseph. This multi-volume English-language catalogue will include approximately 100 paintings. Each work is the subject of a thourough analysis covering technical, historical, iconographical and stylistic aspects. The catalogue contains colour reproductions of each painting as well as other visual documentation from laboratory investigations (infrared reflectograms, ultra-violet fluorescence photographs; X-radiographs, macro photographs), photographs of related works and diagrams of the original frames. The wealth of documentation presented in this volumes makes it an indispensable reference for both scholars and amateurs interested in 15th-century painting.