The present volume has been especially edited to celebrate the vigentennial anniversary of the Institute of Linguistics (ILAS) (2004–2024). It includes an introductory chapter retracing the history of the institute and fourteen research papers in historical linguistics, morphosyntactic topics, and phonetics and phonology. These papers deal with a variety of topics and languages/language families (including Mandarin Chinese, Taiwanese Southern Min, Hakka (Sinitic), Bodo, Garo, Dimasa, Northern Naga, Jingpho, Asakian, Rgyalrong, Qiang, Horpa, Tibetan (Tibeto-Burman), Ong-Be (Kra-Dai), Amis, Atayal, Puyuma, Rukai and Tsou (Austronesian)) written from various theoretical perspectives and approaches that reflect the array of languages and the range of frameworks faculty members are working on.