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Re: More on Milepost With Letters Significance Controvery
Author: John Sweetser
Date: 09-03-2015 - 14:17

Easy to make sense of that. The examples you saw are culvert and bridge markers.
The Northwestern Pacific was an SP subsidiary and as such, followed standard SP sign practices.

Until around the late '50s, SP culvert and bridge markers were wooden. A 1904 SP standard plan (designated C.S. 11) for wooden culvert and bridge markers was reprinted on pg. 37 of the July 1974 NMRA Bulletin. The plan shows the number/letter format that was used.

It appears to have been 1931 when the SP started using a decimal system to indicate the precise locations of culverts and bridges, doing away with the letters.

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Subject Written By Date/Time (PST)
  More on Milepost With Letters Significance Controvery LoverofLore 09-03-2015 - 01:33
  Re: More on Milepost With Letters Significance Controvery John Sweetser 09-03-2015 - 14:17
  Re: More on Milepost With Letters Significance Controvery LoverofLore 09-03-2015 - 21:24
  Re: More on Milepost With Letters Significance Controvery John Sweetser 09-04-2015 - 14:08
  Re: More on Milepost With Letters Significance Controvery LoverofLore 09-04-2015 - 21:37
  Re: More on Milepost With Letters Significance Controvery John Sweetser 09-05-2015 - 16:13


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