The line was also known as the "Johnson line" after a guy Johnson who apparently was trying to go from PHiladelphia to New York.
http://query.nytimes.com/mem/archive-fr ... 946097D6CF
I don't think it made it north of Princeton ever. The Shabbaconk (sp?) creek they are talking about is actually just outside of Trenton, nowhere near Princeton yet despite their claim.
Here is a link to a NY Times article when it did reach Princeton in 1902.
http://query.nytimes.com/mem/archive-fr ... 946397D6CF
And a link to modern efforts to make a trail in the Rider U/Lawrence area
http://www.princetonol.com/groups/lawrg ... ws0012.htm
In Princeton it ran on what is now the south side of Community Park (just north of Birch Ave) and then ran up Witherspoon until about Spring St, a bit short of Nassau St. You can pick out a lot of the ROW between Lawrenceville and Princeton on aerial photos pretty well still.
What I don't know is how the coal for Lawrenceville School (which I read once was what kept the line going until the end) actually reached the boilers -- if there was a spur crossing what is now Route 206, or if the coal was unloaded on the north side of 206 where the line ran and then trucked to campus. (or if the boilers were by the train line and then the steam lines ran under 206 to the school. Anyone know?
Also, there was another trolley line from Trenton to Princton that ran on the other (south) side of 206. I forget the name. Near Princeton, the ROW was what is now the main path through the "Institute woods" behind Princeton battlefield I think, and it ran up Alexander Rd to terminate at the Princeotn train station on University Place. Near Lawrenceville, it ran along 206. DOn't know if this one had freight though.
I just found this map -- shows it both lines
http://mapmaker.rutgers.edu/MERCER_COUN ... y_1918.jpg
Actually, maps.google.com still shows the line from Trenton up to Lawrenceville, through Rider, believe it or not!
JS