Membership and Mailing List

Annual dues for the CCA are $15 for regular members and $10 for retirees. Undergraduate and graduate students may join for free, with a suggested donation of $10. A lifetime membership is $150. An annual membership runs from June 1 to May 31 and renewals are solicited in June.

To join or to renew your membership: first, fill out the form below.

    Second, if applicable, submit payment to CCA treasurer Amanda Sherpe:

    • Via PayPal to
      • To cover the processing fee, please add $0.50 for a regular or retiree membership, or $5 for a lifetime membership.
    • Via Venmo to @ajsherpe (please enter 2407 if the last four digits of recipient’s phone number are requested).
    • Via check sent by post to: Amanda Sherpe, CCA Treasurer, 3790 Armer Ave., Boulder, CO 80305.
      • NOTA BENE: Please make out the check to Amanda Sherpe.

    If you would like to join the CCA electronic mailing list, which is free, please fill out our contact form asking to join or write the CCA’s Communications Director directly at

    For inquiries about the status of a current membership, contact the CCA’s Treasurer at