There are just over 800 flags in the collection, making it one
of the largest flag collections in the country. It includes the
Statehouse Battle Flag collection of 553 national and regimental
colors, state flags, foreign flags, military signal flags,
commemorative flags, and service flags. The earliest flags in
the collection are from the Mexican War era, 1846-1848. The most
recent flags in the collection are from the Iraq War. The pride
of the collection is the very first Ohio flag . The Ohio
legislature adopted its distinctive design on May 9, 1902.