|Residence||New York, NY|
Herbert's wife Cathleen Synge Morawetz was a prolific mathematician at NYU. His sister Sonja Morawetz Sinclair revealed in 2017 she was a WW2 codebreaker after seven decades of secrecy by Bletchley Park Signals Intelligence. He helped organize the defection of Mikhail Barishnikov from the USSR 1974.
- "Herbert Morawetz Obituary". Retrieved 10 March 2019.
- Karen Longwell (25 August 2010). "From Baryshnikov to Bigwin, a piece of Muskoka history". Muskoka Region. Retrieved 17 December 2018.
- "Present At the Defection". Maclean's. 11 July 1994. Retrieved 17 December 2018.