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[Allegorical scene of three people with astronomy equipment]
Illus. in: Almagestvm novvm astronomiam veterem ... / Giovanni Battista Riccioli, 1651. Public domain scan of 17th-century scientific illustration, free to use, no copyright restrictions image - Picryl description
[Composite of astronomy equipment and components] / Henry Winkles scul...
Illus. in: Iconographic encyclopedia / Heck. 1851, v. 1, plate 15. Reference copy in LOT 7007.