Quick search by citation:

16 U.S. Code § 460vv–1 - Additions to National Wilderness Preservation System

In furtherance of the purposes of the Wilderness Act of 1964 (78 Stat. 890, 16 U.S.C. 1131 et seq.) the following lands in the State of Oklahoma are hereby designated as wilderness and, therefore, as components of the National Wilderness Preservation System:
(1)
Certain lands in the Ouachita National Forest, Oklahoma, which comprise approximately 4,583 acres, as generally depicted on a map entitled “Black Fork Mountain Wilderness—Proposed”, dated March 1988, and which shall be known as the Black Fork Mountain Wilderness.
(2)
Certain lands in the Ouachita National Forest, Oklahoma, which comprise approximately 9,371 acres, as generally depicted on a map entitled “Upper Kiamichi River Wilderness—Proposed”, dated March 1988, and which shall be known as the Upper Kiamichi River Wilderness.
Editorial Notes
References in Text

The Wilderness Act of 1964, referred to in text, probably means the Wilderness Act, Pub. L. 88–577, Sept. 3, 1964, 78 Stat. 890, which is classified generally to chapter 23 (§ 1131 et seq.) of this title. For complete classification of this Act to the Code, see Short Title note set out under section 1131 of this title and Tables.