The name Lippert is well-represented in the name index being created from Milwaukee's German newspapers; currently about 140 entries and references. These include death notices and an obit. for a John Lippert, d. 81 yr. in 1935; or other possible matches.
"Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007 ... it's about German-American culture, not data.