Attempting to locate information regarding the following family...posting information I have located in census search:

1930 Census Iowa Palo Alto Co., Graettinger Twp.
Hayes, Mamie Head FW 36 Md Wisc Wisc Wisc
Hayes, Dorothy A. Dtr FW 15 SD Iowa Wisc
Hayes, Vivian E. Dtr FW 13 SD Iowa Wisc
Hayes, Mathew Son MW 9 SD Iowa Wisc
Hayes, James A. Son MW 7 Iowa Iowa Wisc

1930 Census Iowa Palo Alto Co., Emmetsburg Twp
Hayes, John Albert Head MW 65 Ill NY US
Hayes, Susanna Wife FW 73 Scot. N.Ire N. Ire
McMahon, James Stepson MW 47 Ohio N.Ire Scot.
Hayes, Dorothy Gdtr FW 15 SD Iowa Wisc

1920 Census Iowa Palo Alto Co., Emmetsburg Twp
Hayes, John A. Head MW 58 Ill NY NY
Hayes, Susanna Wife FW 60 Scot. Ire Ire
McMahon, James Stepson MW 36 Ohio Ire Scot.
Hayes, Mabel Dtr FW 18 Iowa Ill Scot.

Mamie Hayes's maiden name was Maher and husband was Joseph A. Hayes. Daughter, Dorothy A. Hayes, married name was Millar and died in San Bernandino Co., Ca. in 1960.
Any information regarding this family would be helpful. I have been unsuccessful in locating them on the 1910 census.
Thank you!
Teri C.