I would look in Indiana for the marriage of Alberta's parents. I suspect you know the surname is very probably Lipp as her siblings both all have that name. Henry Lipp is not married in 1910 but is married to Edith in 1920 with a step-daughter with the Mortensen/Mortenson surname. And in 1910 he as in Indiana. I have attached the 50th Wedding Anniversary article from the Kalamazoo Gazette (2 copies-different exposures)dated 16 Oct 1968, pg 23:1. The obit from the Gazette for Alberta (KG 9 Feb 1983 pg B10:6 & a correction from 10 Feb 1983 pg A3:1). Also the obit for Raymond Phelps from 29 January 1983 pg B12:1.