American Design Drafting Association 
Approved Textbook

The content of this text is considered a fundamental component to the design drafting profession by the American Design Drafting Association.  This publication covers topics and related material relevant to the delivery of the design drafting process.  Although this publication is not conclusive, it should be considered a key reference tool in furthering the knowledge, abilities, and skills of a properly trained designer or drafter in their pursuit of a professional career.