I’m an index number junkie. But this blog is not about me, though it will from time to time reveal my preferences, the perogative of the blogmeister.
The kind folks at FRASER provide us really great material. Here the link to Index Numbers of Wholesale Prices in the United States and Foreign Countries : Bulletin of the United States Bureau of Labor Statistics, No. 284, Washington, D.C.: Government Printing Office, October 1921. Chart 1 between pages 14 and 15 is to die for!
Aggregation is the game, and Mitchell was his name, Wesley Clair Mitchell.