At the time of his death, he held the record for most Academy Award
nominations for documentaries (10 + 1 credited to his company, Charles
Guggenheim and Associates), including 8 (a record) for documentary
short subjects; and most Oscars for documentary short subjects (3 + 1
credited to his company, Charles Guggenheim and Associates). (His Oscar
for
Robert Kennedy Remembered (1968) in the live action short subject category.)