Place of public inspection.
(1) Place of public inspection. The text of any ruling (as such term is defined in 301.6110-2(d) or technical advice memorandum that is open to public inspection pursuant to section 6110 shall be located in the National Office Reading Room. The text of any determination letter (as such term is defined in 301.6110-2(e)) that is open to public inspection pursuant to section 6110 shall be located in the Reading Room of the Regional Office in which is located the district office that issued such determination letter. Inspection of any written determination subject to inspection only upon written request shall be requested from the National Office Reading Room. Inspection of any background file document shall be requested only from the reading room in which the related written determination is either open to public inspection or subject to inspection upon written request. The locations and mailing addresses of the reading rooms are set forth in 601.702(b)(3)(ii) of this chapter.