For basic data and bibliography it is by far the most useful WWW resource. The main problem, of course, is that it was finished in 1917 - its comments, and bibliographies, can never thus be taken as the final word. As they become available other secondary sources may be added to the Sourcebook. This text is copyright. The specific electronic form, and any notes and questions are copyright.
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No permission is granted for commercial use. If any copyright has been infringed, this was unintentional. The possibility of a site such as this, as with other collections of electronic texts, depends on the large availability of public domain material from texts translated before 1920. Texts published before 1964 may be in the public domain if copyright was not renewed after 28 years. Efforts have been made to ascertain the copyright status of all texts here, although, occasionally, this has not been possible where older or non-US publishers seem to have ceased existence.