Exactly what you would expect from yarn expert Clara Parkes: a sock knitting book that focuses on yarn selection! The book starts with an explanation of what a sock needs. This is (1) lasting elasticity, (2) strength (tensile strength and ability to withstand abrasion), (3) moisture management (absorption and wicking), and (4) a willingness to be worked and worn. With these requirements in mind, Parkes then talks about the structural differences in various fiber types (protein, plant, regenerated cellulose, synthetic); and about the role that yarn construction (singles, 2-ply, 3-ply, 4-ply, S-on-S cables, true cables, core spun) plays in the choice of good yarns for socks.
Parkes includes a full chapter on stitch tricks for maximizing elasticity (using ribbing, stretchy increases, cables, faux cables), and for maximizing strength (using twisted stitches, fine gauge, slipped stitches, stranding and double knitting). In this chapter Parkes also discusses (1) the pros and cons of using nylon reinforcing yarn; (2) the choice of heel types for greater or lesser durability; and (3) the basics of ease required for proper sock fit.
In the remaining three quarters of the 208-page book, Parke presents 20 wonderful sock patterns, mostly charted, by famous sock designers: Cat Bordhi, Jane Cochran, Cookie A., Stephen Houghton, Jennifer Hagan, Norah Gaughan, Marlaina Bird, Anne Hanson, Jayme Stahl, Melissa Morgan-Oakes, Sivia Harding, Nancy Bird, Sandi Rosner, Cirilia Rose, Jared Flood, Lucy Neatby, Kathryn Alexander, A. Karen Aifke, Ann Budd, and Clara Parkes herself. There are descriptive introductions to each pattern, and there are brief designer biographies in the back of the book.
The most common size is Women's Medium, but many patterns include more than one size. The patterns include the finished measurements of the socks. Knitting skill level is intermediate to experienced (because socks are knitted in the round), but adventurous new knitters should be able to knit the patterns that have simple charts or no charts. Most of the patterns are written for a general type of yarn (usually fingering weight) but then include specific suggestions for commercial yarns (the yarns used in the models).
The only thing not to like about this copiously illustrated book is that the text and photos are not printed on glossy paper. Because this book is both a useful technical reference on sock yarns and a great collection of designer sock patterns, I give it an unqualified 5 stars. I also highly recommend Clara Parkes' first book on knitting yarns, The Knitter's Book of Yarn: The Ultimate Guide to Choosing, Using, and Enjoying Yarn.