Building Object Applications that Work
   Step-By-Step Handbook for Developing Robust Systems Using Object Technology. Written in everyday language and covers topics that are pertinent to real-world developers. This book is written from a developer perspective. By Scott W. Ambler, SIGS Books.
   http://www.ambysoft.com/books/buildingObjectApplications.html

Object Primer
   The Application Developer's Guide to Object-Orientation. An introduction to object-oriented analysis and design techniques. By Scott W. Ambler, SIGS Books.
   http://www.ambysoft.com/theObjectPrimer.html