1906 Transit Map of Downtown LA, this really cool, but sad to see what has been lost.
http://la.curbed.com/archives/2014/07/1906_los_angeles_transit_map_is_impressive_but_oppressive.php
If you are interested I would download this map while you can, no telling how long it will be up there. Its a big map.
This map helped me solve the last link in tracing the original ROW for the Pasadena & Altadena, later LA Terminal Rwy’s route through NE Los Angeles, paralleling the ATSF ROW through Highland Park. I was unsure of the trace in Lincoln Heights, but now I know exactly where it was.