Born in Dresden , Germany , he immigrated to New York City in 1929 and became a U.S. citizen in 1935 .
Fritz Wiessner ( February 26 , 1900 -- July 3 , 1988 ) was a German American pioneer of free climbing .
Born in Dresden , German , Fritz Wiessner immigrated to New York City in 1929 and became a American citizen in 1935 .
Fritz Wiessner ( February 26 , 1900 -- July 3 , 1988 ) was a German American pioneer of free climbing .