Tree-Ring Society

Types of Membership Levels:

Five classes of membership are available: 

  • Individual
  • Resident of Developing Country*
  • Retired Individual
  • Student
  • Institution
  • Lifetime

To become a member, please select a membership level below and select "Next" below to proceed to the next page of the application process. 

If paying for a membership is a financial struggle, please contact us at  We will work to assist you with membership.  Your information will be kept confidential.

* Defined by the International Monetary Fund (see bottom of linked Wikipedia page).

If you prefer to mail a payment in lieu of using a credit card, please mail to:
Tree-Ring Society
3021 Zodiac Ct
Loveland, CO 80537 USA
Payment of membership fee by credit card is open to members in most countries.  Please follow the link from the member application form to the credit card payment system for further details.

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For questions or comments about the website or membership, contact Lori Wilson (trslori [at] gmail dot com. The Tree-Ring Society is a 501(c)3 non-profit association. 
© Tree-Ring Society.  All rights reserv

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