Join Us             Application Options Download PDF Application (Adobe Acrobat Required) or Complete our Online Application The membership fee is $40/year The membership fee is $40/year You may complete the application online or download the PDF application and send it to the address on the application. You may pay using PayPal, or mail your check payable to The Catholic Alumni Club to the address found on the downloadable PDF application. Submit a change of address or other contact information. For more information about CAC or to obtain a membership packet, send or call the CAC Club Information Line at 301-773-7779 or write to address below.  Catholic Alumni Club of Washington P.O. Box 10214 Gaithersburg, MD 20898-0214