The secretary shall have custody of the State Highway Commission's seal and official records and shall be responsible for the maintenance and custody of the docket, files, and records of the commission, including the transcripts of testimony and exhibits with all papers and requests filed in proceedings, the minutes of all actions taken by the commission and all of its:

1. (1) Findings;
2. (2) Determinations;
3. (3) Reports;
4. (4) Opinions;
5. (5) Orders;
6. (6) Rules; and
7. (7) Approved forms.