I am a cousin of Henry Karsten and George Karsten. I can give you dates for these families and respective wives Hattie Panzer and Augusta Panzer, daughters of William. I may even have a Brownie camera picture of one of these Panzers.
I don't know much more about the Panzer family, just what I've read in short entries on the social pages of the Owatonna paper. The Panzers were quite a distinguished family among Minnesota pioneers, it appears.
Would you have any pictures of the early Karstens? We are
trying to update and supplement a 100-page Karsten family tree prepared by my aunt in the 1970s. Thank you for any contact.