Randy Curlin's Collection
5/3/2025
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Home
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Union Pacific Railroad Company
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Locomotives
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Locomotive Models
> Alco 4-6-6-4
Union Pacific Railroad Company Photographic Roster
Reporting Marks: UP
Showing Locomotive model 4-6-6-4
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All 4-6-6-4s
UP Rolling Stock
Unit #
Notes
Model
Serial
# Pictures
UP 3800
Light Challenger
4-6-6-4
1
269796
UP 3959
Schenectady 05/42, retired 07/60
4-6-6-4
69769
1
254432
UP 3985
Challenger class 4664-4, donated to RRHMA.
4-6-6-4
70174
20
3208
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