Annals of the International Geophysical Year, Volume 25: Observations of the Night Airglow covers the results from systematic observations of the night airglow during the two and a half year period of the International Geophysical Year and International Geophysical Cooperation (July 1957 through December 1959). Airglow refers to light other than the polar aurora, emitted by the upper atmosphere. This volume is composed of eight chapters that contain a series of tables of hourly values of the absolute zenith intensity of the airglow, arranged according to station and wavelength. The numerical results from the several observers were put on punched cards to facilitate machine printing and statistical studies. The local times are given at the top of each page, and the universal times at the bottom. The year, month and day of the observations are shown in the first three columns. The convention was adopted of using the date corresponding to the evening, thus, the entire night of 1/2 July 1957 is entered as 1 July 1957 with the understanding that the date changed to 2 July at local midnight. The rest of the book considers the instruments, procedures, and statistic study of the night airglow. This book is of great value to geophysicists.