The second section of this catalog lists the names of the persons and organizations associated with the production of the motion pictures described in the main section and of the authors of the novels, dramas, or other works upon which these motion pictures are based. Also included are the names of persons on whose lives the motion pictures are based or whose names appear in the titles in connection with a musical performance or athletic event. The names of the persons listed in the statements of credits in the main entries are not included. The name of each person or organization is used as a heading, the form of which is either the one appearing in the Official Catalog of the Library of Congress or the one most frequently found in the records of the Copyright Office. Similar names have been listed separately unless it is clear that they identify the same person or organization. Cross-references from different forms of the same name and from pseudonyms are included in the list. Under each heading are listed alphabetically the titles of the motion pictures associated with it, together with their respective year dates, or, for serials, the word _serial_, enclosed in parentheses, in lieu of a date. An asterisk preceding the title indicates that the name appearing in the heading is that of the copyright claimant. Series List The third section of this catalog lists the series titles which are given in the main entries. These frequently appear in varying forms. For each series, therefore, an established form, based on the one most frequently used, is given in the heading. Following the heading are references to other series titles which seem to be related because the names are similar and the claimants are the same. Listed below the headings are, first, the names of the claimants, and, second, the titles of the motion pictures, each followed by its date. In the case of serials, the word _serial_, enclosed in parentheses, is used in lieu of a date. The lists of titles under each series may be incomplete for the period covered by this catalog, because only those titles have been included which are so identified in the sources used in compiling the catalog. For some motion pictures two series titles are given, each of which is entered separately, since the information available makes it impossible to differentiate between main series and subseries. Abbreviations and Symbols The following list includes abbreviations and symbols used in this catalog with specific copyright or bibliographic meanings. Definitions are not given for abbreviations in common use.