Acknowledgements

An undertaking as immense as the SPM involves the hard work and support of a vast number of people.  We wish to thank the many former and present members of the Cesco Observatory, Universidad Nacional de San Juan, Observatorio Astronomico "Felix Aguilar", Yale Southern Observatory, and Yale University who have contributed to the SPM program over the years.  Particular thanks go to the first-epoch observers, A. R. Klemola, A. G. Samuel, J. Gibson, and C. U. Cesco; the second-epoch observers, H. Mira, H. Lépez, J. Sanguin, M. Cesco, C. Vicentela, and J. Torres;  New Haven researchers, J. Lee, T.-g. Yang, W.-Z. Ma, C. Lu; and enthusiastic volunteer assistants C. Predom, E. Wetherbee, D. Kocyla, R. Demartino, and M. Dzubaty.  The SPM has also benefited from the support of the Directors of the OAFA, C. U. Cesco, J. A. López, E. Patiño, and E. Actis; as well as the President of UNSJ, T. A. Del Bono.  Special thanks are reserved for the Scientific Director of the SPM program for many years, Adriaan J. Wesselink; and for Pierre Demarque, whose wholehearted support at a critical time assured the continuation of the SPM .

We are also pleased to acknowledge the aid and advice of Arnold Klemola, Burton Jones, and Robert Hanson of Lick Observatory, whose experience with the Northern Proper Motion Program made our job that much easier.  We also wish to thank Harvey MacGillivray and Daryl Yentis for portions of the UK Schmidt/COSMOS Object Catalog, which have been invaluable to our input catalog preparation.  And we are grateful to the Hipparcos Science Team, the U. S. Naval Observatory and the Space Telescope Science Institute for their assistance and helpful cooperation.

This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.

The SPM Program is supported in part by grants from the National Science Foundation.