I think this is a temporarl paradox. The title of the book has come back in time, so now the author has the idea to write the book which enables it to be published and come back in time.
But if the title had not come back through time, the book will never be written.
Or it could be Amazon, since they have 'The League', 'Colonies' and 'A Dream Given Form' sourcebooks for the Babylon Projest listed.