6. Compilations of criminal histories.

The exemption set forth in § 19.36(2) exempting investigative information obtained for law enforcement purposes from public access "whenever federal law or regulations require or as a condition to receipt of aids by this state require" was intended to permit compliance with 42 U.S.C. § 3789g(b) and 28 C.F.R. § 20 et seq. (criminal history information obtained through support of federal government only to be used for "lawful purposes").