Although not an official tartan, the Ohio tartan (also known as Ogilvie of Inverquharity) was designed in 1983 by Mary Jayne McMichael Fischbach in consultation with the Scottish Tartan Society and adopted by the Ohio Scottish Games Board of Trustees on 18th March 1984. The design is based on the colours of Ohio's flag and state seal. The widths of the stripes in each colour are based on the date Ohio was admitted to the Union.