Department of Delhi Archives 
Most of the records in custody of the Department are in deteriorating state due to unscientific storage in the past, vagaries of nature, human vandalism and natural decay by age. Such records need urgent repair and rehabilitation by various processes of conservation of records. The department is having collection of approximately 3 Crore folios of rare record out of which approximately 10 Lakh folios have been conserved so far and the balance record will also be conserved in a phased manner.