The index is not online, but for the time being the public can use a temporary data terminal at the Salzmann Library on the campus of St. Francis de Sales Seminary (St. Francis, Milwaukee Co., Wis.). The Salzmann Library has an important collection of early German newspapers (1840s-1880s) not found at the public library.
Otherwise, requests for look-ups on individuals can be made to me by email. More info about my work in these papers can be found on my blog.
Gary Rebholz
Milwaukee Wis.
compiler/editor: "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).