This author's research work on Indus Valley Civilization (IVC) extents the current researches with an innovative approach and enables consistently reading more than 2800 (of the >4000) seals as a language and obtain insights from these readings. This bilingual full research is published separately (ISBN: 979-8-9940362-6-6). This collection of articles (also published separately in the Tamil Language) summarizes the full research focusing on: Uses of seals, Tamil Grammar, Worship, Governance, Farming, Animal Husbandry, Relationship between Seals, and Writing Styles of Indus-Harappan Script.This is a collection of nine articles based on the research that explored the Indus-Harappan script as both spoken and written language. This hypothesis is proved beyond a reasonable doubt by identifying the vowels and consonants (total number under 30) used and the syllabic structure that enabled the Indus-Harappan people to sound all the syllables of their already fully developed spoken language. This living language is now spoken by 80 million people in the globe. These nine articles explore limited set of studied seals under each of nine topics to authenticate the hypotheses.Some seal scripts are taken from RMRL (Roja Murthiya Research Library - Chennai, Tamil Nadu, India) Web Research Tool, https: //indusscript.in Seal numbers are from ASI concordance - by Iravatham Mahadevan, IM 77, details shown in the bibliography. Edited seal photographs as credited in the bibliography. Most of the seal scripts in this book are as designed by this author based on the ASI Concordance.