Data on real commodity prices, 1850 - present

These data are freely provided to all comers, and questions and/or comments are welcome.
At the same time, I ask that if you use any of these files that you cite the following:
Jacks, D.S. (2019), "From Boom to Bust: A Typology of Real Commodity Prices in the Long Run." Cliometrica 13(2), 202-220.

Chartbook for "From Boom to Bust", 1850 - present