1783. Two of the acts were limited to seven years, the other was limited to a term of five years. In 1783 several authors' petitions persuaded the Continental Congress "that nothing is more properly a man's own than the fruit of his study, and that the protection and security of literary property would greatly tend to encourage genius and to promote useful discoveries." But under the Articles of Confederation, the Continental Congress had no authority to enact copyright law. The Continental Congress passed a resolution urging the States to "secure to the authors or publishers of any new book not hitherto printed ... the copy right of such books for a certain time not less than fourteen years from the first publication; and to secure to the said authors, if they shall survive the term first mentioned, ... the copy right of such books for another term of time no less than fourteen years. Three states had already enacted copyright statutes in 1783 prior to the Continental Congress resolution, and in the subsequent three years all of the remaining states except Delaware passed a copyright statute. Seven of the States followed the Statute of Anne and the Continental Congress' resolution by providing two fourteen-year terms. The five remaining States granted copyright for single terms of fourteen, twenty and twenty one years, with no right of renewal. At the Philadelphia Convention in 1787, both James Madison of Virginia and Charles Cotesworth Pinckney of South Carolina submitted proposals that would allow Congress the power to grant copyright for a limited time. These proposals are the origin of the Copyright Clause in the United States Constitution, which allows the granting of copyright and patents for a limited time to serve a utilitarian function, namely "to promote the progress of science and useful arts". The first federal copyright act was the Copyright Act of 1790. It granted copyright for a term of 14 years "from the time of recording the title thereof" with a right of renewal for another 14 years if the author survived to the end of the first term. The act covered not only books, but also maps and charts. Only works both printed within the United States and created by citizens were eligible. With exception of the provision on maps and charts the Copyright Act of 1790 is copied almost verbatim from the Statute of Anne. At the time works