TW Index is a complete and detailed index of everything that has appeared in the SDC Turning Wheels magazine since its inception in 1972. Of greatest importance are the advice items that are indexed by subject (engines, brakes, steering, etc.), model AND year including all individual letters that appear in the Co-Operator column. Historical items are also indexed by subject as well as by the vehicle (model and year) they relate to. If you own, for instance, a 1959 Hawk, TW Index will give you instant access to everything that has been published about your car and much more. Each listing, of course, refers you to the specific issue of "Turning Wheels" and cites the page on which the item begins. Rated "excellent" by Fred Fox and Bob Palma. Volume 1 of Turning Wheels Index includes issues of Turning Wheels from 1972 through 1992 with 10,711 references on 159 pages. Volume 2 of Turning Wheels Index includes 1993 through 2009 with 9,995 references on 158 pages.

Volumes for 1898-1968 include a directory of publishers.