Accession number: 1950.0075Related Titles: Child DevelopmentSeries Sponsors: McGraw-Hill Book Co.Producers: Crawley FilmsDistributors: McGraw-Hill Book Co.Production Years: 1950Languages: EnglishFilm Properties: 16mm Black and White Sound Length (feet): 600 (16mm)Subjects: Sponsored filmsChildrenPsychologyEducationEducational filmsHolding Institutions: Library and Archives Canada: 16mm.