Hello. I am responding as a result of your inquiry to evilkimmy, my daughter-in-law. I do most of the genealogy input for kim.
Harvey Knutsen married into my family. His mother-in-law, Dora Wendel Huesmann was a sister of my Grandmother, Clara Wendel Heinrich. I don't have any helpful information for you on Harvey's family but hopefully I can give you a few leads that may help.
http://iowagravestones.org/gs_view.php?status=n&id=28492...Above is the headstone for Charles in the Mount Joy Cemetery, rural Scott county, Iowa. The headstone death date of 1941 is different than all of the ancestry trees that I see.
http://www.qcmemory.org/The Davenport LIbrary has one floor totally dedicated to Genealogy. The Richardson-Sloane Special Collections Center will do research for you. I now live in southern Missouri, so I have asked them for assistance in the past, and their response was professional and thorough. If there
are records, I expect they will find them for you. I have also done research in the center when I am back in Iowa, best library we have been at.
I also have created a findagrave memorial for Charles in the Mount Joy cemetery.
If you have any further questions, please respond to this thread.