- Twins Days Official Web Page
- The official site of Twins Days, which takes place every year in Ohio. - Michigan Twins Association - Convention information and links to other twin sites.
- The Triplet Connection: Annual Convention - Annual convention for triplets and families with triplets, organized by the Triplet Connection.
- Twins Days - the Unofficial Homepage - Information on Twins Days, as well as links to Twins Days photos, and a FAQs.
- Twinstuff.com - Twin Events - Twinstuff.com's list of twin events all over the world.
