Which material did Frank Lloyd Wright famously brand as 'Textile Block' in his innovative residential designs of the 1920s?

Frank Lloyd Wright's innovative use of materials revolutionized modern architecture. Beyond his famous concrete structures, he pioneered specific materials that became synonymous with his unique style and vision. This question explores how Wright's material choices influenced architectural product development and brand positioning in the industry, creating a legacy that continues to inspire designers today.

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Patterned concrete blocks with geometric designs
Woven steel mesh embedded in glass panels
Interlocking wooden panels with fabric inlays
Compressed textile fibers mixed with clay