Shahshahani retired in August 1953 (Mordad 1332) when Mosaddegh and his cabinet were removed from power in a coup.
He spent the last 8 years of his life in writing and research on Iranian historical documents and manuscripts.
He shared his knowledge and expertise with his friends and colleagues (Allahyar Saleh) and helped academicians and scholars with their research.

He was a member of the National Library and Archives of Iran affiliated with the National Commissions for UNESCO.

In an effort to further pursue his interest in historical documents, in January 1962, Shahshahani travelled by land to Europe through Istanbul.
He visited museums and continued his travels to Geneva, Switzerland, where he died of heart attack on March 19, 1962 (28 Esfand 1340).
Shahshahani is buried in the Shahshahan Mausoleum in Esfahan.

Shahshahani had six children who had advanced education and were professional.
His only son, Dr. Ahmad Shahshahani, is author and scholar who was professor of Economics in Tehran University and California State University and currently retired.
Shahshahani retired in August 1953 (Mordad 1332) when Mosaddegh and his cabinet were removed from power in a coup. He spent the last 8 years of his life in writing and research on Iranian historical documents and manuscripts. He shared his knowledge and expertise with his friends and colleagues (Allahyar Saleh) and helped academicians and scholars with their research.
He was a member of the National Library and Archives of Iran affiliated with the National Commissions for UNESCO.
In an effort to further pursue his interest in historical documents, in January 1962, Shahshahani travelled by land to Europe through Istanbul. He visited museums and continued his travels to Geneva, Switzerland, where he died of heart attack on March 19, 1962 (28 Esfand 1340). Shahshahani is buried in the Shahshahan Mausoleum in Esfahan.
Shahshahani had six children who had advanced education and were professional. His only son, Dr. Ahmad Shahshahani, is author and scholar who was professor of Economics in Tehran University and California State University and currently retired.
Hossein Shahshahani