Inevitably in the course of a ten-year programme many individuals and institutions deserve thanks for their help, encouragement and financial support.

In Edinburgh:

Without a doubt this project would not have come into existence had it not been for the foresight and work of Vincent Reddish, who was Astronomer Royal for Scotland and Director of the Royal Observatory, Edinburgh during the early years of this project. Brian Hadley, Callum Barclay and most particularly Bill Roberton at the Photo Lab in Edinburgh, were responsible for all of the photographic work. Their effort in producing the prints used in Volume II was enormous; we hope that our thanks and the appreciation of those who use the Catalogue will be in proportion. Russell Cannon, Russell Eberst, Tim Hawarden, Andy Longmore, Elizabeth Sim, Keith and Sue Tritton, all from the U.K. Schmidt Telescope Unit in Edinburgh and in Siding Spring, Australia are certainly to be thanked. Without their efforts the original plates would not have existed nor would they have been as easily accessible to visiting scientists. Malcolm Longair, who became the next Astronomer Royal for Scotland, continued the support which carried us through to the final plate searching sessions; we thank him for that much-needed continuity and his patience in waiting for the eventual publication.

In Cambridge and Toronto:

Barry Madore especially thanks Donald Lynden-Bell for first suggesting the collaborative effort between Cambridge, Edinburgh and Pasadena. We are indebted to Noel Argue in Cambridge, who produced the overlay programme used to refine the coordinates, and to Stuart Button in Toronto, who kept the overlay programme running. Ed Anderson, Matthew Bates, Petrusia Bojetchko and Robert Freedman who worked on the coordinate revisions got to see more peculiar galaxies (and overlays) than they perhaps ever wanted to, but their contribution to the success of the final Catalogue was crucial. Esther McLeary cheerfully typed the first draft of the text of the Catalogue. Ed Anderson was invaluable in the final stages of readying the Catalogue for publication and in producing the graphics. BFM also wishes to record his thanks to a life-long friend, Katherine Riordon, who was there when so many things began and who was responsible for starting so much.

The Institute of Astronomy, Cambridge and the Natural Sciences and Engineering Research Council of Canada through the University of Toronto, made travel and subsistence during the course of this project possible. Support from the Henri Chretien Fund awarded by the American Astronomical Society during the course of this work is also very gratefully acknowledged.

Wendy Laurel Freedman deserves more thanks from one of us (BFM) than words or even two volumes of galaxies can say.

In Pasadena:

Halton Arp gratefully acknowledges observing time on the Cerro Tololo 4m and on the Dupont 2.5m reflector in Chile, allocated to him by CTIO and by the Mt. Wilson and Las Campanas Observatories, respectively. All photographs which are not from the SRC Schmidt Survey were made with these two telescopes.

Both of the authors thank the Science Research Council in England for financial support administered through the Royal Observatory, Edinburgh. The final publication was made possible through a direct grant from the National Research Council of Canada.

These volumes were compiled under the auspices of the Royal Observatory Edinburgh and the Science and Engineering Research Council of the United Kingdom, in co-operation with the Mount Wilson and Las Campanas Observatories, the Carnegie Institution of Washington, the Institute of Astronomy, University of Cambridge, the David Dunlap Observatory, University of Toronto, the Natural Sciences and Engineering Research Council of Canada and the Cerro Tololo Inter-American Observatory (AURA Inc.).