County Durham | James Cook | Orange County | County Cork | St. Louis County, Minnesota | County Galway | County Mayo | county | Montgomery County | Los Angeles County Museum of Art | Lancashire County Cricket Club | National Film Board of Canada | Westchester County, New York | Nassau County, New York | County Antrim | Rockland County, New York | County Down | Washington County | Hillsborough County | Derby County F.C. | County Meath | County Donegal | Board of directors | Erie County, New York | County Tyrone | County Tipperary | County Louth | County Armagh | Cook Islands | Wayne County, Michigan |
In 2002, Martwick unsuccessfully challenged Republican Peter N. Silvestri for the position of Cook County Commissioner in the 9th district.