This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Navis aeria. la Navis aeria Bernardo Zamagna in libro anni depicta en Drawing of an airship by Bernardo Zamagna Navis aeria et elegiarum monobiblos google id VEAAAAcAAJ pg PA Google Books Bernardo Zamagna other versions PDold Uploaded with Line drawings of airships Line profile drawings of aircraft engravings