Logic:

First semester:  * Introductory Logic, 4th ed. (2006) by Douglas J. Wilson and James B. Nance:
  
    Textbook (Item # 150);
    Exercise Key) (Item # 151)

Second semester: * Intermediate Logic, 2nd ed. (2006) by James B. Nance:

    Textbook (Item # 152)
    Exercise Key (Item # 153)

All four of these books are published by Canon Press, Moscow Idaho.  These texts must be
ordered directly from Canon Press, P.O. Box 8741, Moscow, ID 83843.  The books may be
ordered onllne at: http://www.canonpress.org/shop/?affillink=OXFOR414061140 Canon Press
also has a toll-free number: 1 800 488-2034.