Reference

The key members of Tamaddun Majlish who were involved in the language movement include:

1. Professor Abul Kashem - Founder and General Secretary of Tamaddun Majlish. He was a vital figure in the advocacy for the recognition of Bengali as a state language.
2. Dewan Mohammad Azraf - He was a notable associate of Professor Abul Kashem and actively involved in the movement.
3. Professor Nurul Huq Bhuiyan - He was elected as the Convenor of the first Rastrabhasa Sangram Parishad, which played a crucial role in the language movement.
4. Shahed Ali - Another important associate involved in Tamaddun Majlish.
5. Kazi Motahar Hossain - He was one of the prominent figures who supported the language movement alongside Tamaddun Majlish.
6. Abul Mansur Ahmed - He was actively involved in the efforts of Tamaddun Majlish towards the language movement.

These members played pivotal roles in advocating for the recognition of Bengali as one of the state languages of Pakistan, ultimately contributing to the broader success of the Bengali Language Movement.

For further details, you can refer to the sources from Banglapedia and Wikipedia.