The compiler of this resource guide is now unable to find the time to update in parallel two versions, one for the Web and one for photocopying, so now only the Web version is now being updated. The Web version has the advantages of being free, unconstrained with respect to size, and more informative by virtue of the many HTML links. If you do not have Web access and would like a printout of the guide, the compiler can send a copy of the Web document made on a laser printer. Write to Steven L. Sabol, 5504 Lincoln St., Bethesda, MD 20817, and enclose a check for $3.20 for priority-mail postage.