1966—
Pub. L. 89–809, title II, § 211(a)(8), Nov. 13, 1966,
80 Stat. 1582, inserted “or nonqualified per-unit retain certificates” in item 1383.
1962—
Pub. L. 87–834, § 17(a), Oct. 16, 1962,
76 Stat. 1045, added heading of part I and items 1381 to 1383.