Just like we are able to go back and edit our text documents nowadays, back in the time of typewriters correction innovations were needed to go back and fix errors made. A few ways that mistakes were able to be fixed was by correction devices such as correction fluid, eraser shield, erasable bond, and dry correction.
Correction Fluid
Correction fluid made its first appearance in the 1950's and 1960's and was invented by Better Nesmith Graham. Correction fluid is white sort of paint which can be used to cover up mistakes that are written or typed. Once correction fluid was placed over a mistake, it could be dried and typed over again.
Eraser Shield
Often a writer would have to erase something on a set of carbon copies and so to prevent the pressure of erasing on one paper from smudging onto the other copies below it, the eraser shield was invented. The eraser shield was a thin stainless steel rectangle about 2 by 3 inches with holes in it.
Dry Correction
Dry correction was introduced in the 1970's and it acts like a white carbon paper. A strip of dry correction was placed over the mistakes and the letters were retyped correctly, which caused the black character to be over struck with a white overcoat.
Erasable Bond
Paper companies invented a paper made especially for the typewriter called erasable bond. Erasbale bond was made out of a thin layer of material that could easily be removed from the page and that prevented ink from seeping through. However, this was not the ideal solution because the same chemicals that made the paper erasable made the typing prone to smudging.