Illustration from 1911 Encyclopædia Britannica, article Bridges.
Original caption: FIG. 2.—Bridge of Alcantara.
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Illustration from 1911 Encyclopædia Britannica, article Bridges. Original caption: F<small>IG.</small> 2.—Bridge of Alcantara. {{PD-Britannica}} Category:Images from Encyclopædia Britannica {{PD-Gutenberg}}