The instructions for unsubscribing from ARSClist are maintained here:
An email to ARSC Executive Director ([log in to unmask]<mailto:[log in to unmask]>) also will suffice.
Here are the instructions:
1. Send an e-mail to: [log in to unmask]
2. Leave the "Subject:" blank.
3. As the body of the message, enter: signoff arsclist
4. Send the email
5. You will receive a confirmation message indicating that you have been unsubscribed.