Below are a number of examples of type design during the 1920s & 30s, using geometric abstractions to create letterforms, or components / building blocks of letterforms.

Art Deco / Constructivist / Pre-modern Type Examples:

Geometric Typographic Experiments, ca. 1920

Building Letterforms with basic shapes, ca. 1922

Type Specimen Poster: Bifur, AM Cassandre, 1930

Follow-up Links:

AM Cassandre Works Gallery