Popular variations of log cabin quilt patterns include Log Cabin Skylines, Cubes, and Stained Glass. These patterns and others can be found in "Log Cabin Quilts" by Rita Weiss and Linda Causee.
A new hardcover copy of "Log Cabin Quilts" can be purchased from Amazon.com for approximately $12, with used copies even less expensive. The book contains not only a brief history of log cabin quilts, but also a variety of patterns with illustrated and easy-to-follow instructions. The patterns presented are interesting and up-to-date, and techniques presented range from templates to foundation piecing. Reviews on Amazon.com state that "Log Cabin Quilts" is an excellent guide, even for novice quilters.