The other posting I responded to about your Friedrich AUGUST Geisler (an August Geisler reported missing in April 1897) mentions the regular missing persons' feature found in the local German papers. These aren't necessarily packed with biographical info. about the individual, but usually refer to the person reporting the missing person and the home address. Some of these news items include followup information. Many of the paid notices placed by families in these papers do include physical descriptions.
"Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
Gary Rebholz, originator/compiler/editor, Milwaukee Wis.firstname.lastname@example.org
Indexing Milwaukee's German newspapers continuously since 2007... reporting about a large resource missing from most of our family research projects.