Susan, I am not related, but did a few searches for your Miller/Dickman families.
They are listed in Idaho, Ada County, Boise City in 1870, they have a daughter Louisa, age 2 b. in Montana Territory. They are in Oregon, Baker County, ElDorado in 1880.
You have several family members including Henry and Paulina buried at Kohlerlawn Cemetery in Nampa.
A Henry Dickman received a land patent in Canyon County 1/23/1899 and one in Ada County 6/6/1890.
A Frank Dickman also received two land patents in Ada County.
If I can be of any other assistance contact me.