This Week's Best Old Photos.

1968 election; saving Pres McKinley; Civil War photography; Glomar Explorer; America's wild places.

1. The crowded field in the 1968 presidential election.

Democrats: Pres Johnson, shown in Vietnam, Christmas 1967 [withdrew from the race in March 1968] ; NY Sen. Robert Kennedy [assassinated in June 1968]; MN Sen. Eugene McCarthy; and, VP Hubert Humphrey, shown with advisor Zbigniew Brzezinski. [SD Sen. George McGovern entered the race briefly, just be…