[Untitled photo, possibly related to: Boeing aircraft plant, Seattle, Washington. Production of B-17 (Flying Fortress)… https://www.rawpixel.com/image/12295819/photo-image-background-plant-patternFree Image from public domain license[Untitled photo, possibly related to: Boeing aircraft plant, Seattle, Washington. Production of B-17F (Flying Fortress)… https://www.rawpixel.com/image/12295736/photo-image-plant-person-planesFree Image from public domain license[Untitled photo, possibly related to: Boeing aircraft plant, Seattle, Washington. Production of B-17F (Flying Fortress)… https://www.rawpixel.com/image/12296871/photo-image-plant-person-planesFree Image from public domain license[Untitled photo, possibly related to: Boeing aircraft plant, Seattle, Washington. Production of B-17 (Flying Fortress)… https://www.rawpixel.com/image/12295496/photo-image-background-plant-patternFree Image from public domain license