Section 516.4 - How are records certified or authenticated?(a) Upon request, the person having custody and responsibility for maintenance of records which are to be released under this part or 25 CFR parts 515 or 517 may certify the authenticity of copies of records that are requested to be provided in such format.(b) A request for certified copies of records or for authentication of copies of records shall be sent to the following address: NIGC Attn: Freedom of Information Act Officer, C/O Department of the Interior, 1849 C Street NW., Mail Stop #1621, Washington, DC 20240.64 FR 54542, Oct. 7, 1999, as amended at 80 FR 31994 , June 5, 2015