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Rock Island
Misc map "
Rock Island: Lines Removed or Sold Since January 1, 1936," is a historical document dated January 1974 that tracks the contraction of the Chicago, Rock Island and Pacific Railroad (CRI&P).
The map uses specific line styles to visualize the railroad's decline:

Solid Bold Lines: Represent the active network still operated by the Rock Island as of 1974.
Dashed or Dotted Lines: Indicate rail segments that were abandoned, removed, or sold to other carriers between 1936 and 1974.

Historical Significance

Era of Decline: By 1974, the Rock Island was in severe financial distress, often referred to as being in "bankruptcy blue" due to its final locomotive paint scheme.
Pruning the Network: The "removed or sold" lines on this map highlight the railroad's attempts to "slim down" by abandoning unprofitable agricultural branch lines and secondary routes to save costs.
Liquidated Status: Just six years after this map was printed, the entire railroad was ordered to be liquidated and shut down in 1980, marking one of the largest bankruptcy liquidations in U.S. history.
Successor Roads: Many of the lines shown as "sold" or eventually liquidated were acquired by rivals like Union Pacific, Southern Pacific, and the Burlington Northern.
Rock Island (Poster)