This graph should be on every billboard in the U.S.
Paleo from PAGES2K:
https://figshare.com/collections/Global_mean_temperature_reconstructions_over_the_Common_Era/4507043
combined with the surface temperature from Cowtan & Way
http://www-users.york.ac.uk/~kdc3/papers/coverage2013/had4_krig_std.temp