Smoking Gun That GISS Temperatures Are Garbage

Prior to the post 1999 tampering, the GISS US temperature graph looked like this :

NASA GISS: Science Briefs: Whither U.S. Climate?

This exactly mirrors the graph of USHCN record highs.

http://cdiac.ornl.gov/ftp/ushcn_daily/us.txt.gz

The old versions of GISS were correct, before the data was altered. The 1930s were much hotter. People who rewrite history are criminals.