The Jewish Life Series was originally conceived of as a series of books on the Jewish Holidays. The following Rabbonim from diverse communities were met with to discuss the project at that stage and provided letters of endorsement at that time.
- Rabbi David Aaron
- Rabbi Yitzchok Adlerstein
- Rabbi Benjamin Blech
- Rabbi Nathan Lopes Cardozo
- Rabbi Moshe Eisemann
- Rabbi Elie Gewirtz
- Rabbi Avraham Goldhar
- Rabbi Shlomo Riskin
- Rabbi Akiva Tatz
- Rabbi Noah Weinberg ZT"L
- Rabbi Moshe Weinberger