In 1999, NASA’s James Hansen was upset that the US temperature graph didn’t match his fake global temperature graph, so NASA and NOAA altered the US temperature data.
NASA GISS: Science Briefs: Whither U.S. Climate?
And this is NASA’s current graph, which now shows a strong warming trend during that period.
At first the alterations were small. but then they got much larger.
For each 50 PPM increase in CO2, temperatures are adjusted upwards by 1F.
The lack of data from 1895 doesn’t stop NOAA from drawing a very detailed map.
Global Temperature | Vital Signs – Climate Change: Vital Signs of the Planet