sinks
register 15 19
the portrait collection comprises some 25000 sheets . initially series a of the catalogue consisted of 28 picture books . the nine text volumes provide biographical and bibliographical details on the portrayed persons descriptions of the portraits as well as information on the artist and the respective technique . the supplement complements another 3000 portraits acquired after the beginning of this publication and about 600 further portraits in other techniques and from various other sources . the work includes seven index volumes containing 15 single indexes .