Based on the abandoned wp-publications-archive project hosted on Google Code!
WP Publication Archive adds a custom content type for storing, tagging, and categorizing downloadable content external to standard WordPress posts and pages. You can add downloadable PDF files, Word documents, and PowerPoint presentations. These files will be stored in the standard WordPress uploads directory but will be managed separately through a custom post type interface in the WordPress admin area.
These details are provided for information only. No information here is legal advice and should not be used as such.