Postponement of income tax on income set aside for retirement : hearing before the Committee on Ways and Means, House of Representatives, Eighty-second Congress, second session, on H.R. 4371, H.R. 4373, H.R. 3456, bills to permit the postponement of income tax with respect to a portion of earned net income paid to a restricted retirement fund; H.R. 1173, a bill to equalize taxation on earned income, encourage individual financing of social security, encourage individual, ownership of United States government bonds, and for other purposes; H.R. 5847, a bill to assist individuals to provide financial security upon retirement and to make provisions for surviving members of their families by allowing an income tax deduction for premiums paid on annuity and life insurance contracts; H.R. 7426, a bill to provide that certain amounts expended by individuals for the purchase of non-interest-bearing United States Bonds may be deducted in computing net income, and for other purposes, May 13, 1952