painted sheet metal, painted steel elements

plaster, steel, wood, canvas (model); board c [1]: paper, fiberboard, typescript, offset printing, ink, photographic print on barium paper; board d [1a]: paper, ink, tempera, fiberboard; board e [2]: paper, ink, tempera, hardboard, watercolor, pencil; board f [3]: paper, fiberboard, typescript, offset printing, ink, photographic print on barium paper; board g [4]: paper, fiberboard, typescript, offset printing, ink, photographic print on barium paper; board h [4a]: paper, ink, tempera, fiberboard; board i [5]: paper, fiberboard, typescript, offset printing, ink, photographic print on barium paper; board j [6a]: paper, fiberboard, typescript, offset printing, ink, photographic print on barium paper; board k [7]: paper, fiberboard, typescript, offset printing, ink, photographic print on barium paper; board l [8]: paper, fiberboard, typescript, offset printing, ink, photographic print on barium paper; board m [8b]: paper, fiberboard, typescript, offset printing, photographic print on barium paper; board n [9]: paper, photographic print on barium paper, fiberboard; typescript on paper (envelope, documents in an envelope)