I came across this nice calculator at the Economic History Services site. The thing I learned is that there isn’t one answer to the question “How much is $100 from 1960 worth today?” From the site:
In 2003, $100.00 from 1960 is worth:
$621.65 using the Consumer Price Index
$502.09 using the GDP deflator
$761.26 using the unskilled wage
$1,297.73 using the GDP per capita
$2,086.61 using the relative share of GDP