It took some doing but I think I found them in 1920 as well. They are living with Robert's mother (Mary), father (Moses) and brother (Fred) in Dill, Oklahoma. Lottie and Iren(e) are also there.
Most of the info is still the same, exceptions are that Lottie's mother is now listed as being born in Arkansas. She may or may not have been born there it's just a reference tool at this point. I would also not put very much credence in the fact that two year and two month old Irene is listed as being married... which it also says. lol.