I
- Implement and machinery dealerships: hardware-store departments, at true size Dealerships
- Incorporation: 8 June 1894 Government
- The Indiana Register, counted the same way Historic Preservation
- Indigenous names for this ground — none named Notable People
- The industrial era: a fortune that is not local Wealth
- The industrial park and the south end: the present industrial directory Businesses
- Industry Section
- Influencers & Digital Creators Section
- Influenza 1918: the town named, the town bound, the toll uncounted Epidemics & Public Health
- Inks Family Cemetery: the township's lost ground Cemeteries
- Inside the line: the town park, and the cemetery in the state park Famous Landmarks
- The institution tests, run one by one Black History
- The interurban and the bus: both tests negative Public Transit
- The interurban: proposed once, never built Railroads
- Inventors & Inventions Section
- The Iowa trap, dispelled, and the ecosystem today Arts
- Isaac Early Notable People
- Isaac R. Cole Notable People
- Israel Irvin Notable People
- The ISSMA All Music Award, two years running Music