Every partnership or association, before commencing business as an export warehouse proprietor, shall furnish with its application for permit, required by Sec. 44.82 a true copy of the articles of partnership or association, if any, or certificate of partnership or association where required to be filed by any State, county, or municipality. Where a partnership or association has previously filed such documents with the appropriate TTB officer, a written statement by the partnership or association, in duplicate, to that effect will be sufficient for the purpose of this section. (72 Stat. 1421; 26 U.S.C. 5712)