What themes and images were illustrated in the manuscripts during the Pala period?

Buddhist themes and images of Vajrayana Buddhist deities

Answer: Buddhist themes and images of Vajrayana Buddhist deities
Manuscripts were illustrated with Buddhist themes and images of Vajrayana Buddhist deities during the Pala period.

The last great phase of Buddhist art in India, including illustrated manuscripts, occurred during the Pala period (750 CE to the mid–twelfth century). Like the Jain texts and paintings, the illustrated manuscripts of the Palas of eastern India also form the earliest examples of paintings from the eleventh and twelfth centuries. Pala period (750 CE to the mid–twelfth century) saw the last great phase of Buddhist art in India. Monasteries, such as Nalanda and Vikramsila were great centres of Buddhist learning, and art and numerous manuscripts were illustrated here with Buddhist themes and images of Vajrayana Buddhist deities on palm leaves