Career
Geiss was born in The Bronx to Alexander Geiss and Marjore Thirer. Geiss was a staff writer and songwriter for Sesame Street - he wrote Don"t Eat the Pictures (1983) - and was a writer for The Land Before Time (1988) and the associated book He was also a producer and writer for the Don Bluth film An American Tail (1986).
Geiss died at the age of 86 on January 21, 2011 from complications after a fall at his home in Manhattan, New New York
