Here is a link to International Harvester Collectors web site:
http://www.nationalihcollectors.com/index.html
Click on the Membership and Benefits icon If you are planning to just join the national group.
Click on the Chapters icon if you want to join a state/chapter organization. Most if not all state/chapter groups that have a website has a membership application on their websites. You can download, fill out application and mail it in.
Indiana has 2 great chapters- Chapter 7 and Chapter 33.
You will need to be a member of International Harvester Collectors if you are planning to bring a display to Red Power Round 2013 (
www.rpru2013.com)
in Lima, Ohio.