Stark headed the Milwaukee Bar and held other positions of distinction, though I'm not sure if he held elected office. The LOC link has an image. He is also in many of the standard Wisconsin and Milwaukee biographical reference sources.
One of the reasons I have made this note now is that I forgot about this book, and it is not on Internet Archives.
Aikens and, Andrew J; Proctor, Lewis A, eds. (1897). Men of Progress. Wisconsin. Milwaukee: The Evening Wisconsin Company. p. 486. Retrieved September 14, 2013. Note: the LOC URL for the main page messes up the wiki template. This link is for the text, but sometimes it is easier to see the images so click up to get it. I thought the LOC had a ref URL (permalink) feature, but I can't find it.