I don't find any direct matches to your Rasch spelling, but possible matches for Raasch in "Milwaukee's German Newspapers; an index of death notices and related items" (1844-1950).
The German papers have a detailed biography included with the wedding anniversary article for Peter and Sophia Bast Ebert in the 1880s. There are also possible matches for them in later death notices. There are about 375 Ebert and 100 Bast entries in the index.
There are about 40 Rasch & Rasche entries, and over 400 Raasch entries in the growing index. There are several August Ebert entries ranging from 1864-1930.
Gary Rebholz, compiler/editor
Indexing Milwaukee's German newspapers continuously since 2007... helping to access our historic German-American culture.