A survey of 166 members (96% of those available) of a movie projectionists union in the Boston area did not reveal significant differences in respiratory symptoms of pulmonary function between those who had entered the union prior to 1940 and those who had entered the union after 1940. Measurements included responses to a standard questionnaire, and simple tests of pulmonary function. Cigarette-smoking habits were taken into account. Aerometric measurements were made in the booths and were much lower than those reported in the literature prior to 1940. As a result of this morbidity survey we do not believe that these movie projectionists have had significant exposures at work.