Cover of the US Naval Observatory book “Instructions for Observing the Transit of Venus” with the signature of Truman Henry Safford, Director of Williams College’s Hopkins Observatory from 1876-1902.

Published October 19, 2015 at 365 × 500 in Historical Documents

Cover of the US Naval Observatory book
“Instructions for Observing the Transit of Venus”
with the signature of Truman Henry Safford,
Director of Williams College’s
Hopkins Observatory from 1876-1902.