Material gathered in 1959 (by VA and MFL) tracing the history of the ICP, earliest records of worlds and earliest references to them in reports.

a) Survey of ICP case sheets 1928/29 by Ville Andersen, 19.3.59, plus copy;

b) Survey history of Institute of Child Psychology made by Ville Andersen, 4.4.59;

c) Letter Ada Jordan to M. Lowenfeld answering queries on history of ICP training and technique. 22.4.59;

d) Statistics on Worlds recorded in 1929, plus notes;

e) Number of case records 1928 - 1958/9;

f) Postwar case histories.