Please indicate your contact details (mobile no. (Name of Parent) (Name of Representative) to claim a copy of Authenticated PSA Birth Certificate of my child .The Cook County Clerk's office keeps official records of births that occur in Chicago and suburban Cook County. NOTE: Birth Certificates are confidential records and copies can only be issued to a person entitled to receive them. The application must indicate. Every person authorized to request a correction must complete an Affidavit and Certificate of Correction Request. For all eligible City of Chicago employees other than Sworn Police Officers below the rank of Sergeant and seasonal employees. Business and Procurement Services to ensure that the specifications are complete and in the proper form.