Membership Benefits  Who Can Form a THJHA Club?  Organizing a New Club  How to Join  What's Going On?  Publications  Message Board  THJHA Promo Video!  Club Directory Home / Tar Heel Junior Historian Association / How to Join To join THJHA, adult sponsors must complete an online application form. For more information contact Jessica Pratt, Tar Heel Junior Historian Association Coordinator at 919-807-7985 or e-mail at thjhaclubs@ncdcr.gov