Memberships may be paid via check, ACH deposit or by credit card.
ACH Deposit information is:
Denver Earth Resources Library
Banking Institution: BOK Financial
Routing Number: 102000607
Account Number: 4010000117
Please send checks:
Denver Earth Resources Library
730 17th St Suite B1
Denver CO 80202
To pay via credit card go to
https://derl.org/payment-options and select the appropriate membership.