Internal PDF Memo Library

Hello,

I am working on putting together a Internal WordPress site that can handle document posting from the admins. I have a solution already for the primary Document Library which contains PDFs, Spreadsheets, Word Documents, and Design Documents.

I was wondering if anyone here knows of a plugin that could handle posted PDFs and present them by Month, this way only the PDFs from the current motnh would display. The entire site is behind a login so SEO is not important. If anyone knows of an effective plugin for something along this idea please let me know. I can provide screenshots of what we use currently on our old internal site.

Thanks!