Ticket cost from Virginia or east coast to Los Angeles in 1881

From: "Susan Villegas" suzanna_vee@yahoo.com

I am trying to figure out what a ticket cost for a black pregnant woman to 2 children riding the rails from Virginia or east coast to Los Angeles in 1881? I know that she had to get off the train in Dallas Texas to have her baby and later continued on. Would you know if they were to ride in a regular rail car or the head car? Looking for any information you can give on how they [travelled] and how long a trip. ...

—Susan Villegas