| 1875 | Beginning of Hartzell Industries with sawmill in
Greenville, Ohio – John T. Hartzell, founder |
| 1880 | Brass whistle given to John T. Hartzell |
| 1885 | Produced oak and ash lumber for building wagons |
| 1900 | George W. Hartzell buys company |
| 1900 | Sawmill moved to Piqua, Ohio |
| 1910 | General offices moved from Dayton to Piqua |
| 1915 | Began manufacturing gunstocks |
| 1917 | Began manufacturing propellers |
| 1920 | Started manufacturing wooden steering wheel segments |
| 1920 | Hartzell’s present main office built |
| 1920s | Built wooden battery cases |
| 1924 | Hartzell-made airplane wins first place in its class at
The International Air Races in Dayton |
| 1925 | Built wooden victrola cabinets |
| 1929 | Built West Burlington, Iowa sawmill |
| 1933 | R. N. Hartzell took over the reins |
| 1941 | Hartzell-Norris Charitable Trust established |
| 1942 | Helped develop process for gluing wood to metal in gliders |
| 1969 | 4th generation G. William Hartzell becomes CEO |
| 1969 | Decatur Industres, Inc., producer of walnut accessories for
smokers, acquired by Hartzell |
| 1972 | First to develop a Dual-Matic grade mill |
| 1975 | Another Hartzell division, American Woodcrafters, formed |
| 1995 | State-of-the-art lumber handling system constructed |
| 1998 | Major expansion of lumber dry kiln system |
| 1999 | Another major expansion of lumber dry kiln system |
| 2001 | 5th generation Jim Hartzell becomes CEO |
| 2002 | 7 new kilns added |
| 2007 | Largest expansion in company history takes place |
| 2010 | 4 more kilns along with air sheds constructed |
