Elasticity: Tensor, Dyadic and Engineering Approaches by P.C. Chou and N. J. Pagano

There are a few helpful reviews of this book on amazon.  Here is the link to that page: 
Elasticity-Tensor-Dyadic-Engineering-Approaches
http://www.amazon.com/Elasticity-Tensor-Dyadic-Engineering-Approaches/dp...
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 The contents of this book are outlined as follows:  Concepts of stress and then strain are developed independently from an engineering framework.  Then they are connected through consideration of linear elasticity and the governing equations of elasticity are subsequently developed.  The formulation of these equations is then studied in detail in several chapters for simplified situations (2d problems, etc.).  Then the essential equations are re-developed in tensor and then dyadic notations and connections are drawn between the various formulations.

 I think that this book complements the course because it covers all the material regarding linear elasticity discussed in the class but provides a unique presentation.  As an engineer, this book is particularly helpful because it develops the more mathematical formulation of elasticity after developing the essential equations in the engineering context.  Also, it contains sections on more advanced topics in elasticity which I assume will be relevant later on like variational principles.

There are a few things I like about this book.  The first is that it's in the Dover series so you can get it in paperback for like $13.  Secondly, I like the book because it contains all the material on linear elasticity from the notes and presents it in a more cohesive framework.

All that being said, I would like to add that this book is obviously not sufficient as a reference for the entire course.  For instance a specialized reference on crystal elasticity is useful:  Physical Properties of Crystals:  Their Representation by Tensors and Matrices by J. F. Nye has been helpful.

 -Andrew Seagraves