Additional E&M References

ELECTROMAGNETIC THEORY (4th Ed) by Reitz, Milford and Christy

ELECTRICITY  AND MAGNETISM, VOL II, by Edward. Purcell (Berkeley Series)

ELECTRICITY and MAGNETISM by Munir Nayfeh and Morton K. Brussel

ELECTROMAGNETIC FIELDS & WAVES (3rd Ed) by Lorrain, Corson and Lorrain

ELECTROMAGNETIC FIELDS by Roald Wangsness

CLASSICAL ELECTRODYNAMICS by Hans C. Ohanian

ELECTROMAGNETIC THEORY by Daniel R. Frankl

INTRODUCTION TO ELECTROMAGNETIC FIELDS,   by C. R. Paul , K. W. White, and S. A. Nasar

FUNDAMENTALS OF ENGINEERING ELECTROMAGNETICS, by D. K. Cheng

ENGINEERING ELECTROMAGNETICS, by W. H. Hayt and J. A. Buck

APPLIED ELECTROMAGNETISM, by L. C. Shen and J. A. Kong

ELECTROMAGNETICS WITH APPLICATIONS,    by J. Kraus and D. Fleisch

ELECTROMANGETIC CONCEPTS AND APPLICATIONS,   by R. E. DuBroff, S. V. Marshall and G. G. Skitek

References for Mathematical methods

M. Boas, "Mathematical Methods in the Physical Sciences", 2nd Edition (excellent source, highly recommended)

G. Arfken, Mathematical Methods for Physicists", 5th Edition (slightly higher level, but also quite standard and widely used)