| A | B |
|---|
| Wooden/Letterpress | hand operated by two men |
| iron | used a screw to exert pressure |
| columbian | replaced screw with lever |
| job press | powered by a foot treadle |
| cylinder | adapted to steam power |
| rotary web | two pairs of cylanders used |
| phototypesetting | uses film |
| Washington | modified iron press with moving bed |
| stereotyping | a way of doing reprints easily |
| four cylinder | greatly increased production |
