the copyright proprietor can validate his claim by production of the postmaster's receipt in lieu of deposit copies.
Foreign
worksIn respect to foreign works, it should be noted that "the original text of a work of foreign origin in a language or languages other than English," may be formally copyrighted and fully protected by registration under the same formalities as domestic works except that the deposit copies need not be manufactured within the United States, thus giving the author the exclusive right of translation. Copies published for use in America must of course bear the copyright notice. A translation into English from such text cannot be copyrighted unless the deposit copies of the English translation are manufactured within the United States; and this holds true also in respect to translations into a language other than English, as it is only "the original text" which can be copyrighted without American manufacture.
Ad interim
depositIn respect to books published abroad in the English language, ad interim protection is assured by the provision (sec. 21): "That in the case of a book published abroad in the English language before publication in this country, the deposit in the Copyright Office, not later than thirty days after its publication abroad, of one complete copy of the foreign edition, with a request for the reservation of the copyright and a statement of the name and nationality of the author and of the copyright proprietor and of the date of publication of the said book, shall secure to the author or proprietor an ad interim copyright, which shall have all the force and effect given to copyright by this Act, and shall endure until the expiration of thirty days after such deposit in the Copyright Office."
On such works the provisional copyright is made permanent under the provision (sec. 22): "That
