He was elected IEEE Fellow (1991) for "contributions to the structure of telephone connecting networks, stochastic control, and nonlinear filtering".
[5] The Benesfest was celebrated at Columbia University (2001) to honor his 70th birthday.
[6] He resides in Millburn, New Jersey (since 1985) where he has been a long-time mountain climber[7][8] and member of the American Alpine Club,[9] and currently heads the local historical society.
Emilie Benes Brzezinski, a sculptor, was his sister.
His first wife Janet was the daughter of Philip Franklin and niece of Norbert Wiener.