Big Thicket National Preserve Addition Act of 1991

[AI summary unavailable — showing source text] Big Thicket National Preserve Addition Act of 1991 - Expands the boundaries of the Big Thicket National Preserve, Texas, through the addition of specified lands in Hardin, Polk, Tyler, Orange, and Jasper Counties, Texas. Requires the Secretaries of Agriculture and the Interior to exchange commercial timberlands within and in the vicinity of the Preserve. Prohibits the Secretary of the Interior from acquiring a specified area owned by the Louisiana-Pacific Corporation or its subsidiary, Kirby Forest Industries, Inc., without the owner's consent as long as the area is used exclusively as a youth camp. Requires the Secretary to study and report to specified congressional committees, with recommendations of: (1) alternate means of preserving the scenic integrity of the Village Creek and Big Sandy Corridor units; and (2) the costs associated with implementing such alternatives. Authorizes appropriations.…