Dave Burton sent over a bunch of archive links which have turned up some more history of NASA’s data tampering.
The graph below shows NASA’s 2004 version of global surface temperatures in red, and current version in green – normalized to 1998. Note that in 2004 the 1880’s were just as warm as the 1960’s, but they have since cooled way down. Hansen must have traveled back in time and changed the past.
2004 version : Fig.A.gif (274×203)
2013 version : Fig.A.gif (656×446)
The next graph shows the extent of their changes. NASA has completely eliminated the hot 1880’s, when Europe set their all-time record high temperature. Thoughtful of them to go back in time and cool those poor people down.
2001 version : http://www.giss.nasa.gov/data/update/gistemp/graphs/FigA.txt
2013 version : http://data.giss.nasa.gov/gistemp/graphs_v3/Fig.A.txt