2 Free Photos of Astronomical Regulator By Simon Willard, Jr. (harvard University)

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Astronomical regulator by Simon Willard, Jr., Boston, c. 1832-1842, distributor of standard time signals to New England, 1842-1857 - Putnam Gallery - Harvard University - DSC08012
self-published workcc-pd-mark
Astronomical regulator detail, by Simon Willard, Jr., Boston, c. 1832-1842, distributor of standard time signals to New England, 1842-1857 - Putnam Gallery - Harvard University - DSC08013
self-published workcc-pd-mark
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