Contributions from 

 The Museum of History and Technology: 



Paper 2 



John Deere's Steel Plow 

 Edward C. Ko/da/l 



DEERE AND ANDRUS 17 



THE FIRST FLOW 19 



STEEL OR IRON" 21 



WHY A STEEL PLOW 2) 



RECONSTRUCTIONS 24 



IN SUMMARY 25 



