Several tornadoes touch down; deaths, injuries confirmed in Greenfield - Des Moines Register
- Several tornadoes touch down; deaths, injuries confirmed in Greenfield Des Moines Register
- Up-Close Look At Tornado Devastation In Greenfield, Iowa - Videos from The Weather Channel The Weather Channel
- Iowa tornadoes damage: Photos show devastation left by severe storms USA TODAY
- Tornado-spawning storms left multiple people dead in Iowa and are now threatening cities from Texas to Vermont CNN