18 CFR 1301.33: General exemptions.

Individuals may not have access to records maintained by TVA but which were provided by another agency which has determined by regulation that such information is subject to general exemption under 5 U.S.C. 552a(j). If such exempt records are within a request for access, TVA will advise the individual of their existence and of the name and address of the source agency. For any further information concerning the record and the exemption, the individual must contact that source agency.