The museum houses a rare collection of over one crore palm leaves held by the Kerala State Department of Archaeology, containing administrative records dating back to the Venad period and past political and social information from Travancore, Cochin and Malabar regions.

[4][5] The museum house palm leaf collection held by the Department of Archaeology, which contains records of administration, purchases and sales, medical procedures, punishments, servitude, agriculture, agricultural culture, economy, lease, tax reform, and tax collection from the Venad, Travancore and Cochin kingdoms.

[4] To protect the palm leaves from damage, they are placed inside special boxes, with the contents, script, and language of each one written on top, along with appropriate pictures.

[6] The second gallery contains palm leaves containing lease agreements, purchase and sale documents, and records of the construction of canals, dams, and ditches for agriculture.

[6] Documents on establishment of government schools, the opening of new English schools, the establishment of hospitals, the preventive measures against epidemics such as smallpox and cholera, and the death toll, the observance of social distancing like today's Covid, the taking of loans from the Cochin treasury, the pepper trade, the riot-fighting activities during the Swathi Thirunal period, and the riots in Cochin, etc.

[10] The last gallery, Mathilakam Records, contains many documents about the Sree Padmanabhaswamy Temple, the art, culture, law, and administration of the Travancore kingdom.

[6] The Palm Leaf Museum has been set up in eight galleries on an area of 6,000 square feet at a cost of Rs 3 crore at the Central Archives Building, the Thiruvananthapuram regional office of the Archaeological Department.