The Library of Congress and the Electronic Copyright Office both offer means to register your works.
Steps to Registering your Work
Here's how it's done:
You've created something-whether research or a creative expression, that you want to Copyright:
Complete an application
Include the correct fee
Include nonreturnable copies (usually, one for unpublished and two for published)
Library of Congress
Copyright Office
101 Independence Avenue, SE.
Washington, D.C. 20559 6000
The Electronic Copyright Office
Offers a faster, less expensive, and trackable means for securing copyright. Read throught the tutorial below for details on how to secure copyright using the Electronic Copyright form.