Section 610, act May 25, 1926, ch. 383, § 14(a–1), as added June 23, 1932, ch. 273, 47 Stat. 332, related to reclassification of lands within the Klamath irrigation district.

Section 611, act July 1, 1946, ch. 529, 60 Stat. 366, related to availability of revenues from lease of Tule Lake marginal lands for refunds, was from the Interior Department Appropriation Act, 1947. Similar provisions were contained in the following prior appropriation acts: July 3, 1945, ch. 262, 59 Stat. 340; June 28, 1944, ch. 298, 58 Stat. 487; July 12, 1943, ch. 219, 57 Stat. 473; July 2, 1942, ch. 473, 56 Stat. 533; June 28, 1941, ch. 259, 55 Stat. 332; June 18, 1940, ch. 395, 54 Stat. 434.

Section 612, acts June 17, 1944, ch. 261, § 2(b)–(d), 58 Stat. 279; Aug. 1, 1956, ch. 828, § 2(e), 70 Stat. 799, related to lands of the Klamath project being subject to the reclamation laws.

Section 1 of act June 17, 1944, ch. 261, 58 Stat. 279, provided that the contract dated Apr. 28, 1943, negotiated by the Secretary of the Interior with the Klamath Drainage District was approved and that the Secretary was authorized to execute such contract.

Section 3 of act June 17, 1944, ch. 261, 58 Stat. 279, provided that section 612 was part of the Federal reclamation laws.

Act Aug. 1, 1956, ch. 828, 70 Stat. 799, authorized Secretary of the Interior to execute a repayment contract with Tule Lake Irrigation District.