Big Four Consolidation Diagram and System Maps

[sinistral]

I know the Trains fans can point out many, many more fallen flags that belong on the left side, but this is a pretty decent infographic nevertheless:

http://nicolasrapp.com/?p=951

[mudchicken]

Never has seen an ICC Valuation Index Key, has he?

I was so hoping for the Big Four that interests me (CCC&StL)....