Excerpts from Books and Wikipedia
"Now they were accepted as a routine means of passenger transport. Germany's luxurious Graf Zeppelin had crossed the Atlantic in 1928, circumnavigated the globe in 1929, and clocked up more than 1,000,000 miles without incident. A total of 33 people were killed although 64 others were spectacularly rescued from the tangled burning wreckage." [Furtado: 1001 Days]