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Unspecified / 1937

Weldless steel tubing for aircraft construction

Weldless steel tubing for aircraft construction

The Smithsonian catalogs Weldless steel tubing for aircraft construction as books in its Tubes, Steel records.

Trade literature.

SERENDIPITYA little unexpected
FamiliarWeird

The Smithsonian lists the object under Tubes, Steel and dates it 1937.

Trade literature.

Smithsonian InstitutionWeldless steel tubing for aircraft construction

Original explanation based on the sources above. Images carry their own reuse terms.