Given a text, write a compressed version of it in a single sentence.

If you would like to become a member of ELM, please fill out the enclosed membership form and send it back at your earliest convenience. You may pay membership dues by check or with Visa or MasterCard, and all contributions to the Environmental League are tax deductible.
If interested in joining ELM, fill out the membership form and sent it back soon. Membership fees can be paid by check or Visa or MasterCard, and funds to the Environmental League are tax deductible.