[4] The former President of India, Pratibha Patil, released a book on the letters of exchange between Sinha and prime minister Jawaharlal Nehru titled Freedom and Beyond.

[5][6] The correspondence between Nehru and Sinha touches on subjects such as Indian democracy in the making in the early years of Independence, Centre-State relations, role of governor, turbulence in Nepal, zamindari abolition, and education.

[5][6] Sinha gave his personal collection of 17,000 books to the public library in Munger in 1959 which is now named Sri Krishna Seva Shadan after him[7] which in 2016 was reportedly in poor condition due to lack of funding.

He was released from jail in 1923 and on the day of Tulsi Jayanti performed in the play Bharat Darshan at Central School, Kharagpur.

The then-governor had to accede to the demands for release of prisoners from Cellular Jail (Kalapani) and the Bihar Tenancy Act was reformed in favour of peasants.

But they again resigned in 1939, as did all Congress chief ministers, over the question of involving India in the Second World War without the consent of the Indian people.

[10] His tenure, spanning over 14 years after India's independence, was marked by transformative reforms and progressive governance that laid the foundation for modern Bihar.

One of his most notable achievements was the abolition of the zamindari system, which aimed to end feudal landholding practices and redistribute land to the poor and marginalized farmers.

This monumental reform brought significant relief to the rural populace and contributed to reducing socio-economic inequalities in the state.

He worked tirelessly to ensure access to education for underprivileged and marginalized communities, which was a significant step towards social equality.

Shri Krishna Singh’s government did push for the development of the state's coal resources, particularly in regions like Jharia and Hazaribagh, to fuel industrial projects.

During his tenure as Chief Minister, Shri Krishna Singh envisioned the development of an industrial corridor through Begusarai, Bakhtiyarpur, and Fatuha.

To facilitate this vision, he oversaw the construction of Rajendra Setu, the first railroad bridge on the Ganges in independent India, completed in Mokama-Simaria in 1959.

Shri Krishna Singh was a staunch supporter of Mahatma Gandhi's principles and worked to eradicate untouchability and caste discrimination.

He actively implemented policies to uplift Dalits and backward classes, ensuring their greater participation in social, economic, and political spheres.

Shri Krishna Singh's tenure as Chief Minister is remembered as a period of significant progress, social reform, and economic transformation in Bihar's history.

His death marked the end of a significant era in Bihar's political history, as he had been the state's first Chief Minister, serving from 1946 until his demise.