ponded to our letters
and well over 100 provided photographs for review and selection. We were
particularly pleased that for the majority of the species found in the
western North Atlantic our most difficult problem was narrowing the
choices and ultimately selecting illustrations from the many good
materials made available to us. Although there are far too many
contributors to mention all by name, their prompt and enthusiastic
responses to requests for help are gratefully acknowledged, whether or
not their materials were used.

Although photo credits follow each figure, we would particularly like to
cite the generosity of Marineland of Florida, Hideo Omura of the
Japanese Whales Research Institute, J.G. Mead of the U.S. National
Museum, K.C. Balcomb of Moclips Cetological Society, Seiji Ohsumi of the
Far Seas Fisheries Research Laboratory, Jack Lentfer of the Alaskan
Department of Fish and Game, the U.S. Naval Undersea Center (NUC), The
University of Rhode Island, and William F. Perrin of the National Marine
Fisheries Service (NMFS). Photographs by Taruski, McCann, Hain, Wheeler,
and Rigley are in Winn's files. All others are in the files of
Leatherwood and Caldwell. The illustrations for Figures B1 and D1 were
prepared by George Galich of NUC. All other illustrations were prepared
by Lois Winn.

The extensive and often tedious job of preparing black and white
photographs of suitable format from the vast array of black and white
and color negatives and prints and from color transparencies was
accomplished at the NUC Photographic Laboratory by the able team of
Domingo Sanchez, Ray Krenik, Jeanne Lucas, and Alan McPhee.

George E. Lingle and John C. Moore assisted with gathering and reviewing
the literature and with cataloging and screening photo materials.

The various drafts of the manuscript were typed by Linda Thomson,
Margaret Alvarez, and Sandra Nolan. Sandra Peterson assisted with
proofreading the later drafts.

In preparing this guide we drew freely from the literature on cetaceans
of this region and supplemented it with our own observations and with
unpublished notes provided by our colleagues. A partial list of
materials used, each a good source of reference material on cetaceans in
general or on cetaceans of the western North Atlantic in particular, is
provided in the following section, "Selected Bibliography."

All of the following colleagues read all or part of the manuscript and
made useful suggestion