Editor's Acknowledgments

This document is the collective work of innumerable individuals who wrote and edited the text, commented on draft material, and implemented the capabilities described herein, during the 19 years since the VLBA's dedication in 1993.  We thank these many colleagues for their contributions.  J. D. Romney, current editor of the Summary, is responsible for the most recent revisions, and thus is the best contact for readers who may have questions on the material, or suggestions that would enhance the usefulness of this guide.