The book tests one's Buckeye State knowledge. Self-Portrait of a State dedicated to George W. Knepper. Both men taught history at the University of Akron. There is a word for postcard collecting coined by Ohio professor Rendell Rhoades of Blanchester. After his death in 1976 a scholarship was established in his name at Ashland.
Stamp collectors are philatelists.
Thanks to Rhoades, postcard collectors are deltiologists.