The various collections of Fr. Placid, letters from different sources to him, periodicals of different kind, the articles consigning the profession of Mar Thoma VI are of immense value. There are two documents in Malayalam, one is the manuscript of the revised Syro-Malabar liturgy of 1964, the other is a series of ten articles given in the “Thoyhilali” on the various talents and special charism of Fr. Placid. The second one proclaims the incompetent position of Fr. Placid amoung the scholars of the church of the East. The following are some works of Fr. Placid, they are Syrian Christians of India, Church of Seleucia, Church of Seleucia and catholic roman communion, Varthamanappusthakam, Biblical concept of priest hood, Latin Christians of Malabar, One rite and liturgy, Way to the Coonan cross oath, Thomas Christians of Malabar and Chaldean liturgy, Rise and decline of the Indian church of the Thomas Christians, Mariology of the church of the east, Class note articles and correspondences of Fr. Placid Podipara, Liturgy: Particular reference with east syriac liturgy, Christian orient etc.