July 1989 
Dr. Dobb's Journal 

MURRAY.LST
Line-of-Best-Fit
by William H. Murray and Chris H. Pappas

WEISKAMP.LST
An Icon Editor
by Keith Weiskamp and Loren Heiny

MCMANIS.LST
Multitasking OSs and Graphics Coprocessors
by Chuck McManis

DUVANENKO.LST
Image Mathematics
by Victor Duvanenko

FLOYD.LST
Turbo Pascal with Objects
by Michael Floyd

MENICO.LST
Faster String Searches
by Costas Menico

STEVENS.LST 
C Programming Column
by Al Stevens

PORTER.LST
Graphics Programming Column
by Kent Porter