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A set in which the parts are not themselves architectural but the accompanying instructions show a lot of architectural constructions.

These are square and triangular blocks with bevelled projections on two sides and matching bevelled slots on two others to allow blocks to slot together (see third picture below). Earlier blocks were in wood but later they were made of hollow plastic in red, white and blue.

category other construction methods
materials wood, later plastic
date 1930's-50's?
made by Wood Products Manufacturers, Detroit Michigan, USA; then Hillcraft Industries, Traverse City, Michigan, USA


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