Sources:
Jule Styne - Wikipedia
Sammy Cahn - Wikipedia
"The Best Christmas Songs Were Actually Written By Jews" - Newsweek (2017)
"11 Iconic Christmas Songs That Were Written By Jews" - Kveller (2020)
"7 Classic Christmas Songs Written By Jews" - My Jewish Learning
"10 Christmas song you didn’t know were written by Jewish artists" - DeseretNews (2019)