1772 - Captain James Cook begins 2nd voyage aboard the Resolution to the South Seas to search for Terra Australis (Southern continent).
1832 - Source of Mississippi River discovered (Henry R Schoolcraft).
1858 - Stewart Culin, American ethnographer (d. 1929).
1923 - American explorer Roy Chapman Andrews discovers the first recognised dinosaur eggs, in the Gobi Desert, Mongolia.
1934 - Aleksei Stanislavovich Yeliseyev, USSR, cosmonaut (Soyuz 5, 8, 10).
