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 also contain registrations made under other symbols if the subject matter or type of material of these registrations is similar to that generally included in the part.

Orders.—The Office calls attention to the fact that orders for all parts of the Catalog should be sent directly to the Register of Copyrights, Library of Congress, Washington 25, D. C. Orders may be placed as follows: (1) as a subscription for a single year or to continue until further notice, or (2) as an order for individual issues. All orders should state clearly the title of the Catalog part and the inclusive dates of the issues wanted. For the convenience of subscribers, payment may be made with the order or upon receipt of an invoice from the Copyright Office. Checks or money orders should be made payable to the Register of Copyrights.

The price of each individual number of the Catalog is given in the Table of Organization. The annual subscription rate for each part is twice the price of a single number, since all parts are issued semiannually. The complete Catalog of Copyright Entries may be secured on a subscription basis for $20 a year.

Inquiries.—The Copyright Office welcomes inquiries, suggestions, and comments on the content and organisation of the Catalog. Please address communications of this nature to the Chief of the Cataloging Division, Copyright Office, Library of Congress, Washington 25, D. C.

ABBREVIATIONS The following list includes abbreviations used in this catalog with specific copyright or bibliographic meanings. Definitions are not given for abbreviations in common use.

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