SPENCER, BARRETT AND CO. |
England, c.1850, NIM |
Quadrants = PMS, MYS (2), D.(1972); Sextants = MYS (3), Virginia Historical Society; Octants = Virginia Historical Society, USNM, Hart Nautical Museum, Boston, Mass. |
the octant at the Virginia Hist. Soc. is also marked "H. Duren, N.Y.", its case has a Duren trade card. |
London. |
USNM; Moskowitz 104; RSW. |
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