24,000 in 1920 dollars = $ 253,532.93 http://www.wolframalpha.com/input/?i=24%2C000+in+1920+dollar...
24,000 in 1940 dollars = $ 362,138.28 http://www.wolframalpha.com/input/?i=24%2C000+in+1940+dollar...
(yes, deflation. the dollar was worth more in 1940 than in 1920 - see the graph in the first link)