Pages tagged blueprints:

The Blueprints, reference image database, with more than 37000 blueprints, templates, 3/4/5-views and drawings - The largest free blueprint collection on the Internet, more than 36000 blueprints online.
The "blueprints" of Monsieur Eiffel
These designs are reproductions of Eiffel's original designs included in his book "The 300 Meter Tower", Lemercier publications, Paris 1900.
para Histourist