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- Eyre Crowe’s 1882 painting of Horrocks observing the 1639 transit of Mercury. (Liverpool Art Museums/The Walker)
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- Hevelius’s 1662 publication on the 1639 transit of Venus and on transits of Mercury (Courtesy of Owen Gingerich)
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- Frontispiece of Hevelius’s 1662 publication on the 1639 transit of Venus and on transits of Mercury. (Courtesy of Owen Gingerich)
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- Frontispiece of Hevelius’s 1662 publication on the 1639 transit of Venus and on transits of Mercury. (Courtesy of Owen Gingerich)