In 1989, the long time head of NOAA’s National Climatic Data Center reported most global warming occurred before 1919, and that Earth cooled from 1921 to 1979.
The actual data wrecked global warming theory, so NASA and NOAA have been steadily rewriting the temperature record ever since – to match their broken theory.
NASA now shows very little warming from 1881 to 1919, and lots of warming from 1921 to 1979. The exact opposite of what Tom Karl wrote in 1989.
Well behaved skeptics are expected to accept the NASA temperature record, but I can’t think of any good reason to provide assistance to the biggest fraud in science history.