I found the following U. S. and state Census info.
In 1880 the family was living in Pleasant Ridge, Lee Co., Iowa.
Theodore Schulte, b. abt. 1831, Baden, Germany, farmer.
Anna, wife, b. abt. 1842, Ireland.
Marian, dau, b. CA, 19 yrs old.
William, b. CA, 15, farmer.
Elizabeth, b. IA, 13.
John, b. IA, 10.
Henry, b. IA, 8.
Clara, b. IA, 6.
Frank, b. IA, 4.
Rosa, b. IA, 3.
Joseph, b. IA, Aug 1879.
In 1885, the family was still living in Pleasant Ridge per the Iowa State Census.
Theodore Schulte, b. Prussia, 53 yrs old, farmer.
Anne, b. Ireland, 43.
William, b. CA, 19, farm hand.
Mary A., b. CA, 21.
Joseph, 5. There was no birth location on the Census for the above children.
Their neighbors were William, Elizabeth and two Rauenbuch children.
A two-year old Josephine Schulte was living with the Johnson family.
Neighbors Dedrick and Elizabeth Schulte and children.
In 1900 the family was still living in Pleasant Ridge.
Theodore Schulte, b. Germany, Aug 1831, immigrated 1845 and naturalized before the 1900 Census, marr 38 yrs, farmer.
Annie, wife, b. Ireland 1840, had given birth to ten children and nine were alive in 1900, immigrated 1858.
Henry, b. IA March 1871, single, farm laborer.
Clara, b. IA, Jan 1873, single.
Theadore, b. IA Dec 1879, single, farm laborer.
Josephine Rosa, b. IA, Mar 1877, single.
Joseph, b. IA, Aug 1879, single.
In 1900 Theo and Annie were living in West Point, Lee Co., Iowa.
Theo Schulte, b. Germany, immigrated 1845, marr 48 yrs, no occupation.
Annie, b. Ireland, immigrated 1858.
Their neighbors were William, Mary and children Schulte.
There is a family tree posted on Ancestry.com for the Schulte family. I asked the poster to contact you.
I checked FamilySearch but didn't find any family members listed there.
The Del Norte Historical Society will do research for a reasonable fee. Go to http://cagenweb.com/cpl/ca-society.htmhttp://cagenweb.com/cpl/ca-society.htm . Successful Searching!