1934 Book in Tamil by V Ramanujan Iyengar Swami http://acharya.org/bk/pb/vri/pab.pdf
Yatindra Pravana Prabhavam
By Pillailokam Jeeyar1907 Book in Mani Pravalam http://acharya.org/bk/pb/plj/ypp1907.pdf
Nalayira Divyaprabandham – Moondram Ayiram
Third thousand verses of Four ThousandBook Released Words broken down for easy reading and matching to the meanings of poorvacharya vyakhyanams. Pauses matching to Sri U Ve Puttur Krishnaswami Iyengar Swami’s work. Includes differences in words (pAda bedham), adivaravu and
Thiruppavai Muvayirappadi Arayirappadi Vyakhyanam
1970 Book published by PB Annangarachariar Swami http://acharya.org/bk/pb/Vyakhyanam/DP/tpv-3p-6p.pdf
Nalayira Divyaprabandham – Irandam Ayiram
Kindle book and Printed book on Amazon