These are different miscellaneous Tektronix publications. Click on the links below to view the page.
Employee Handbook circa 1956
Export Department Brochure 1950s overview of Tektronix with overseas distributor listing
No One Has Ever Really Found The Limits Of Human Ability 1978 company overview
Some Notes and Applications on Tunnel Diodes by Jack Day
Using Your Oscilloscope Probe (undated)