General rule. Except as provided in 301.61103, relating to deletion of certain information, 301.61105(b), relating to actions to restrain disclosure, paragraph (b)(2) of this section, relating to technical advice memoranda involving civil fraud and criminal investigations, and jeopardy and termination assessments, and paragraph (b)(3) of this section, relating to general written determinations relating to accounting or funding periods and methods, the text of any written determination (as defined in 301.61102(a)) issued pursuant to a request postmarked or hand delivered after October 31, 1976, shall be open to public inspection in the places provided in paragraph (c)(1) of this section. The text of any written determination issued pursuant to a request postmarked or hand delivered before November 1, 1976, shall be open to public inspection pursuant to section 6110(h) and 301.61106, when funds are appropriated by Congress for such purpose. The procedures and rules set forth in 301.61101 through 301.61105 and 301.61107 do not apply to written determinations issued pursuant to requests postmarked or hand delivered before November 1, 1976, unless 301.61106 states otherwise. There shall also be open to public inspection in each place of public inspection an index to the written determinations subject to inspection at such place. Each such index shall be arranged by section of the Internal Revenue Code, related statute or tax treaty and by subject matter description within such section in such manner as the Commissioner may from time to time provide. The Commissioner shall not be required to make any written determination or background file document open to public inspection pursuant to section 6110 or refrain from disclosure of any such documents or any information therein, except as provided by section 6110 or with respect to a discovery order made in connection with a judicial proceeding. The provisions of section 6110 shall not apply to material that is open to public inspection under section 6104. See section 6110(l)(1).