How We Sent a Man to the Moon Without E-mail and Why It Matters Today(calnewport.com)
calnewport.com
How We Sent a Man to the Moon Without E-mail and Why It Matters Today
http://calnewport.com/blog/2014/10/04/how-we-sent-a-man-to-the-moon-without-e-mail-and-why-it-matters-today
Take a look at this citation list for "Lunar Impact: The NASA History of Project Ranger" - http://books.google.com/books?id=UewO7htzSv4C&pg=PA386&lpg=P... and see just how many are "interoffice memo from X to Y".
They also had voice-operated memo writers, also known as secretaries, typists, or stenographers.