Question – travel to Pendleton, OR in 1878
My gg grandmother came west in 1878. A letter passed down thru the years says she took the train to Glenns Ferry, ID and from there went to Pendleton, OR. Research has shown me that there was no train to Glenns Ferry in 1878. It has been pointed out to me from someone at the National Historic Oregon Trail Interpretive Center that most of the emigrants at that time took the train to KELTON, UT and then wagoned into ID. I have found out that Kelton was the first big RR town west of Promontory and that Kelton was a CPRR town.
My ancestors came from N MO at about the IA state line and also from Sigourney IA.
I am trying to determine which rail line they would have most likely taken west from an area near there that would have landed them in Kelton, UT at the end of their journey. Are there maps showing the rail lines in 1878? If not can you tell me of the route the railroad would have taken?
Any help you can provide me would be greatly appreciated. This is not a school project. I am a genealogist researching my family's journey west.
Thank you for your help.