Reference to 3500 men and women, with a Category Index (CI).
Of particular and somewhat unique use, this CI is divided into eight main groups "which bring together closely related activities". Within each category, names are listed alphabetically, and persons prominent in more than one field appear again. The CI begins with a List of the groups and subgroups. [460]

TBD type the List! Here is an example:

PHILOSOPHY, RELIGION, AND EDUCATION
Philosophers
Religious Leaders
Theologians
Clergymen and Churchmen
Educators
Historians and Archaeologists
Scholars and Linguists
Legal Scholars