Here is a sample of a letter to the Social Security Administration:
Date of request:
Social Security Administration OEO FOIA Workgroup 300 N. Green Street P.O. Box 33022 Baltimore, Maryland 21290-3022
Please send me a photocopy of the actual application for a Social Security card (Form SS-5--Social Security Number Record Third Party Request for Photocopy) filed by the person listed below.
My understanding is that the fee is $27, when the Social Security number is provided or $29 if the Social Security number is unknown or incorrect. Enclosed is a check or money order for $27.00, made payable to the Social Security Administration.