Section, Pub. L. 90-417, Sec. 106, July 23, 1968, 82 Stat. 413, placed limits on the availability of the stationery allowance for Senators. See section 58 of this title

Section 506(k), formerly Sec. 506(h), of Pub. L. 92-607, as amended by Pub. L. 93-145, Sec. 101, Nov. 1, 1973, 87 Stat. 532, and renumbered Sec. 506(i) by Pub. L. 95-391, title I, Sec. 108(a), Sept. 30, 1978, 92 Stat. 773, renumbered Sec. 506(j) by Pub. L. 96-304, title I, Sec. 101, July 8, 1980, 94 Stat. 889, and renumbered Sec. 506(k) by Pub. L. 97-276, Sec. 101(e), Oct. 2, 1982, 96 Stat. 1189, provided that, insofar as this section has application to Senators, the repeal is effective Jan. 1, 1973