This impressive image was taken by photographer J. R. Eyerman and was featured in LIFE magazine. It depicted a chalk board full of calculations that the NASA Scientists were working on. People believe that the equations on the chalk board were only written on for the picture as the equations are general ones rather than equations the Scientists would have been working on at the time. The Scientists in this photo were known as Computers. This name was given to people whose job was to solve mathematical equations, hence how the name Computer was then given to the electronic device which could do their job years later.
Photo credit: Blogspot | http://knowledgedish.com/rare-historical-photos-fb/32/