Tektronix 4050 Series Graphic Computing System Manuals and Plot 50 Cartridge

Includes: 
Operator's Manual 070-1940-01
Reference Manual 070-2056-01
Plot 50 Software Backup Tape Data Cartridge 020-0161-01
BASIC Reference Guide 070-2142-01
Package of 10 key overlays 334-2630-00
TEKniques 4050 Series Newsletter March 15,1980, Vol. 4. No.2