California's Railroad to the U.S. 1861 - 1996

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Model Train Help EBook

Southern Pacific
suburban 'Prairie' tank
SP Class S-1

built by Sacramento Shops
1900 1901 1902 1903 1904 1905 1906 0000 0000 0000

SPMW 571 ex SP 1901 nee SP 1502 originally CP 231
shown here as a Shop Switcher modified to an 0-6-2

7 units built between 1881 and 1882 originally numbered 1501-1507.

Built by Central Pacific for use on the suburban lines in Oakland.

Some ended up in Portland, Oregon; others converted to Shop Switchers.

All S-1 Class off roster by 1918.

SP developed drawings in 1900 for an 0-10-0 tank engine for use in East Bay commute service, presumably a replacement for Mr Stevens's 2-6-2Ts. They were identified as the Decapod type.


  • A Century of SP Steam Locomotives - Guy L. Dunscomb
  • SP Co. Steam Locomotive Compendium by Diebert & Strapac

Additional information this page, courtesy A.D. McLennan

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