http://www.measuringworth.com/calculators/uscompare/
In 2006, $49.85 from 1958 is worth:
$347.50 using the Consumer Price Index
$283.48 using the GDP deflator
$464.59 using the value of consumer bundle
$435.25 using the unskilled wage
$817.68 using the nominal GDP per capita
$1,407.87 using the relative share of GDP
..I'm still confused..