Southwestern Data Systems
Catalog visible on the Apple Orchard, V1N1 March/April 1980, page 39
s/n Name    
  APPLE-DOC
This program set is a must to anyone writing or using programs in Applesoft!
   
 
  ROGER'S EASEL
What would be the easiest way to put lo-res graphics in a program?
   
 
  PROGRAMMER'S UTILITY PACK
A collection of many useful programs to aid in programming the Apple II.