Twelfth.—Either association may discontinue this agreement at any time by giving to the president of the other association ten (10) days' notice in writing of its purpose to do so.
Thirteenth.—This agreement to remain in full force and effect for and during the term of five years from this date, unless sooner terminated in the manner provided in section twelve (12) of this agreement.
Fourteenth.—Amendments and alterations may be made at any time by the representative committees, subject to the approval of the respective associations.
In testimony whereof, the Petroleum Producers' Association, by its executive committee, and the Petroleum Refiners' Association, by its president and secretary, have hereunto set their hands this nineteenth day of December, a.d. 1872, in the City of New York.
Petroleum Producers' Association, by C. V. Culver, A. H. Bronson, Samuel Q. Brown, William Parker, B. B. Campbell, Executive Committee.
Petroleum Refiners' Association, by John D. Rockefeller, President.
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