[or-roots] How did they get here? A transportation querry

[dgoodma02 at comcast.net]

My mother (Cora Belle Dye) was born in Missouri (near or in Joplin) in 1895
and was married in Oregon abt 1920,(I was born In 1928). Also my father(Duane Cecil Goodman) was born in 1897 in Lyons Oregon.  My Grandfather (Prince W. Goodman) was born in 1876 in Linn Co. Oregon. My grandmother Goodman (Corabelle McLane) was also born Linn Co Oregon in 1878.  OK, The question is--How did they travel out to the West?  Did the Railroads extend to the Oregon Washington (Oregon Territory) during that time?  Or did they most likely come most of the way on the Oregon Trail by Wagon?  It appears to me that my Father's family was out in Oregon considerably earlier than the Dyes.
I know I"m asking for an educated guess..
Any Ideas?
Thanks,
 Bob

--
Duane R.(Bob) Goodman