Changes

 *[http://en.wikipedia.org/wiki/Bukhtiarpur_Bihar_Light_Railway "Bukhtiarpur Bihar Light Railway"] ''Wikipedia''. *[http://en.wikipedia.org/wiki/Martin%27s_Light_Railways "Martin's Light Railways"] ''Wikipedia''. *[http://www.irse.bravehost.com/irc.htm "History of Railway construction"] ''Indian Railways Service of Engineers'' [see "Martin & Co" in table].