The decision has been harshly criticized in Nimmer on Copyright, the leading treatise on copyright, as being incompatible with previous decisions and the intent of Congress when it restored foreign copyrights.
This is true of her last five books in the "Famous Forty" being: The Wishing Horse of Oz (1935), Captain Salt in Oz (1936), Handy Mandy in Oz (1937), The Silver Princess in Oz (1938), and Ozoplaning with the Wizard of Oz (1939).
For the Thompson books which are still protected, the rights are held by the L. As books published with copyright notice (and later renewed) between 19 retain protection for a total of 95 years, and Thompson's remaining protected works were all published between the years 19, those works will enter the public domain beginning in 2019 (with The Cowardly Lion of Oz) and continuing with each successive book on an annual basis until 2030 (barring any further extensions of copyright). Neill have maintained the copyrights on his three Oz books; they will be protected until 2036 (The Wonder City of Oz), 2037 (The Scalawagons of Oz), and 2038 (Lucky Bucky in Oz).
Reilly & Lee reprinted the Oz books many times without providing any dating or edition information other than the original copyright date, a fact that has bedeviled book collectors who have mistaken later editions for first editions.
The company reprinted Baum's pre-1919 books with the "Reilly & Lee" imprint, instead of the "Reilly & Britton" imprint of the original editions, but with no other indication that the books were later editions.
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It had long been assumed that failure to comply with US formalities placed these works in the public domain in the US and, as such, were subject to copyright restoration under URAA (see note 10).
The court in Twin Books, however, concluded "publication without a copyright notice in a foreign country did not put the work in the public domain in the , and hence have the same copyright term as unpublished works.
Hirtle, "When is 1923 Going to Arrive and Other Complications of the U. Public Domain," , and similar charts found in Marie C. copyright duration calculators are available online, including the Public Domain Sherpa ( and the Durationator (in beta at The Open Knowledge Foundation has been encouraging the development of public domain calculators for many countries: see Circular 15a, Duration of Copyright: Provisions of the Law Dealing with the Length of Copyright Protection (, by Peter B. Kenyon (Ithaca, NY: Cornell University Library, 2009) available for purchase at and as a free download at (though note that the only formality that applied was the requirement to renew copyright after 28 years). "Publication" was not explicitly defined in the Copyright Law before 1976, but the 1909 Act indirectly indicated that publication was when copies of the first authorized edition were placed on sale, sold, or publicly distributed by the proprietor of the copyright or under his authority. A good guide to investigating the copyright and renewal status of published work is Samuel Demas and Jennie L.
Malaro, A Legal Primer On Managing Museum Collections (Washington, D. A useful copyright duration chart by Mary Minow, organized by year, is found at . Europeana’s public domain calculators for 30 different countries outside of the U. Unpublished works registered for copyright since 1978 can be considered as if they were an "Unpublished, Unregistered Work." All terms of copyright run through the end of the calendar year in which they would otherwise expire, so a work enters the public domain on the first of the year following the expiration of its copyright term. to receive copyright protection, and failure to deposit copies of works with the Register of Copyright could result in the loss of copyright. Brogdon, "Determining Copyright Status for Preservation and Access: Defining Reasonable Effort," Library Resources and Technical Services 41:4 (October, 1997): 323-334. The Online Books Page FAQ, especially "How Can I Tell Whether a Book Can Go Online?
The firm of Reilly and Lee, the publisher of all of the other "Famous Forty" Oz books, was able to issue its first edition of the original book only in that year.