>I thought the non-adjusted prices were interesting. No idea what story it tells if you adjust it, but non adjusted, the prices were essentially the same from 1840-1925.

I'd heard that there was no inflation in England in 1914 versus 1614. That's not quite right, but there was a remarkably stable period (for some value of "stable") between c. 1650 and c. 1750, and another from 1820 to 1914.