Value of $100 in 1939, adjusted to 1948

What happened to prices between 1939 and 1948

Between 1939 and 1948, the Consumer Price Index went from 13.9 to 24.1. Cumulatively, prices increased 73.4%, which works out to an average of 6.31% per year. Put differently, a dollar in 1939 bought what $0.58 buys in 1948.

Consumer prices fell 1.4% in 1939, closing out a decade in which the CPI fell in six years and rose in four, leaving prices 18.7% below their 1929 level even after the mid-decade recovery. Measured against the start of the CPI’s modern record, prices still stood 40.4% above their 1913 level, a reminder that even a decade defined by deflation left the cost of living well above where it had been a generation earlier. The decade’s final months reset the economic picture entirely. Germany invaded Poland on September 1, and Britain and France declared war two days later; the United States stayed formally neutral under the Neutrality Acts, but Allied orders for war materiel began flowing to American factories almost immediately, a demand shock that would do more to end the Depression over the next few years than any peacetime relief program had managed. Domestic policy kept building on the New Deal’s framework, too: the federal minimum wage rose to 30 cents an hour that October, the second step in the schedule set by the 1938 Fair Labor Standards Act. Amid it all, the New York World’s Fair opened April 30 in Queens, themed “The World of Tomorrow” and drawing tens of millions of visitors with exhibits on television and other technologies promising a more prosperous decade than the one just ending. First-class postage held at 3 cents.

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The destination year: 1948

Consumer prices rose 8.1% in 1948, down slightly from 1947’s 14.4% but still the second straight year of sharp postwar inflation now that wartime price controls were fully gone. Congress moved to stabilize a different economy that April, passing the Economic Cooperation Act to fund the plan Secretary of State George Marshall had proposed the year before: more than $13 billion over four years to rebuild Western Europe and counter Soviet influence. The Cold War turned tense closer to the plan’s target that June, when Soviet forces cut off road and rail access to the Western-controlled sectors of Berlin. American and British aircraft responded almost immediately with an airlift of food, fuel, and supplies that would keep the city running for nearly a year. Domestic politics produced its own upset that November: nearly every poll and pundit had predicted a Republican win, but Harry Truman defeated New York Governor Thomas Dewey, handing the Chicago Tribune its famously wrong “Dewey Defeats Truman” headline. Consumer prices finished the year 143.4% above their 1913 level and 40.9% above 1929’s pre-Depression peak. First-class postage held at 3 cents, and the minimum wage stayed at 40 cents an hour.

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