What color did ATSF use for chalk marks for cars in Chicago interchange?

Andy Cich <ajc5150@...>

At the PRRT&HS Convention, I purchased a PRR document titled "Chicago
Division: Symbol System of Car Placement". There is a page that described
what marks to put on the cars and an example.

I uploaded a file named PRR_Chicago_Marks.jpg to the files section so you
can all look at this page.

The page says PRR cars are marked in yellow crayon, and other colors are
used for other roads. So, what color would be used for AT&SF?

Andy Cich

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