The publication of this monumental work, started in 1954, has been completed. Part 1 and the first issue of part 2 (published in four issues) have already been reviewed in The Journal (May 9, 1953, page 197, and Feb. 19, 1955, page 690). The maps and text of part 2 were not issued in sequence, but, since they are perforated for inclusion in a loose-leaf binder and since the pages are numbered, they can now be assembled in the order in which they appear in the table of contents. Those who have the earlier issues should be pleased to be able to complete their collection. It is hoped that the loose-leaf format means that as certain maps become obsolete with improvements in methods of disease prevention they will be brought up-to-date and made available as replacements.