Carnegie Free Library of Beaver Falls (Beaver Falls, Pennsylvania), 1903
Iroquois Apartments, now offices (3600 Forbes Avenue), 1903 Allegheny County Jail (Ross Street), 1903-1905 additions by Osterling to the 1886 building by Henry Hobson Richardson Allegheny High School, now Allegheny Middle School (810 Arch Street), 1904 Commonwealth Trust Building (312 Fourth Avenue), 1907 Luzerne County Courthouse (Wilkes-Barre, Pennsylvania), 1909