Here are two very good videos per issues in the Temperature Record.
The first, at 15 minutes, is a short overview of motivations of government employee “science” and some of the issues involving just how unimportant any actual warming might be. Touches on the point that government only gets what it pays for, and it pays for alarmist results. By Roy Spencer at “America First Energy Conference”. Titled “Climatologist Roy Spencer – The Bias In Climate Science”.
The second is longer, at about 53 minutes. By Tony Heller and titled “Evaluating The integrity Of The Official Climate Records”; it has a great set of A/B comparisons of what they said then vs now. Demonstrates graphically the way that the past is “mailable” in the hands of NASA / NOAA / IPCC. It is from 2 years ago, and similar to his other presentation from last year, but still good.
In particular, at the Q&A part, he tells how he digs up all those lovely old news articles about the very hot 30’s and the very cold 70’s. Useful information, that.
Musings from the Chiefio 
Pingback: Bias Or Corruption Of Temperatures – Climate Collections
mailable
Small correction, I guess you meant “malleable” which means able to be stretched or squeezed or otherwise have its shape changed. It is derived from the Latin “malleus” meaning hammer 🔨.