The codes are even used officially in the system timetable and for baggage handling.
Not true.
http://www.amtrak.com/ccurl/302/209/Illinois-Missouri-Schedule-011215.pdf
You can find a timetable with Galesburg online at Amtrak.com. Nowhere on the pages of Illinois services does "GBB" appear.
And I'm not handling baggage. I'm trying to read a blog post.
yes, the station codes are at the front with the station information, and they are used for baggage handling. If they are not, then prove it in the formats that I am specifically citing.
You aren't 'citing' anything.
Provide a link to your format, please, like I did to mine on Amtrak.com.
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Front of what where? I don't see it. On the 'front' page of the schedule online I see
"Amtrak Service in ILLINOIS
and MISSOURI
...
CHICAGO-GALESBERG-QUINCY
and intermediate stations
..."
On the schedule page,
ILLINOIS ZEPHYR and CARL SANDBERG,
I see, left to right,
Carl Sandberg California Zephyr Southwest Chief Illinois Zephyr mile
10:18A 4:38P 5:38P 8:38P 162 Galesburg, IL
Nothing on the schedule says 'GBB', not anywhere.
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I didn't say the codes weren't used for baggage handling. I'm reading a post, I'm not handling baggage. I have never checked baggage on my Amtrak trips.