April 29 (UPI) -- On this date in history: In 1854, Ashmun Institute in Pennsylvania, the first college founded solely for Black American students, was officially chartered. The private school was renamed Lincoln University in 1866 and became public in 1972. In 1885, women were admitted for the first time to examinations at England's Oxford University. In 1913, Gideon Sundbach of Hoboken, N.J., was issued a patent for the zipper. In 1945, troops of the U.S. Seventh Army liberated 32,000 prisoners at the Nazi regime's Dachau concentration camp near Munich, Germany. In 1970, the South Vietnamese, with help from the...