1949 Book in English by N Desikacharya Swami http://acharya.org/bk/pb/nd/oagbpm.pdf
History of Srivaishnavas
1917 Booklet in English by T A Gopinatha Rao http://acharya.org/bk/bl/tagr/hosv.pdf
Yatiraja Vimshati Vyakhyanam
Commentary in Manipravalam by Pillaillokam Jeeyar http://acharya.org/bk/pb/plj/yvv1884.pdf
Sri Rangaraja Stavam Vyakhyanam
Book in Manipravalam by Thirumazhisai Annavappangar Swami http://acharya.org/bk/pb/taa/srrs-v.pdf
Annavin Kaala Nirnayam
1934 Book in Tamil by Govindaraja Ayyangar Swami Link