Keywords: Plover Bay Sketch Map 1869.PNG en A sketch map of the lower portion of Provideniya Bay including Emma Harbor showing the location of the two temporary eclipse observatories and the anchorage of the ship Report of Professor Asaph Hall Reports on Observations of the Total Eclipse of the Sun August 7 1869 Government Printing Office Washington B199-B218 http //articles adsabs harvard edu//full/1870USNOM 7B 1 /0000802 000 html Asaph Hall 1870 Old maps of the Russian Empire Provideniya Bay PD-USGov |