1. Teaching guide, physical education: Part IV, Playground safety Author(s): Los Angeles City School District. Division of Instruction and Curriculum, author. Publication: [Los Angeles] : Los Angeles City Schools, [1942?] Subject(s): Physical Education and TrainingEquipment SafetyPlay and PlaythingsCurriculumCalifornia
2. ATSC cold weather tests: winter 1944-1945 Author(s): United States. Army Air Forces. Air Technical Service Command. Climatic Requirements Office, author. Publication: Dayton, Ohio : Army Air Forces, Air Technical Service Command, 31 May 1945 Subject(s): Cold TemperatureAircraft -- standardsEquipment SafetyMilitary ScienceWorld War IIAlaska