Takahashi and Weitenberg expand Takahashi’s earlier presentation at the 9th symposium of the Canadian Society for Syriac Studies to provide the history and linguistic analysis of Ms. Yale Syriac 9. Only three such Syriac-Armenian lexica are known to survive. The book may have been acquired by late-19th and early-20th century Bishop Timotheos Paulos in Urhoy. The glossary is of particular interest because the language is classified as the Western branch of Modern Armenian, attributed to Dialect Group 5. Part 1 is the historical overview of the full paper, and a transcription of the glossary is available in Part 2.