Here are some of his key works:
* The Excavations at Nippur: This was a multi-volume work that detailed the results of the University of Pennsylvania Museum's excavations at Nippur, a major ancient Mesopotamian city. Chiera worked on this project for many years, and his contributions were significant.
* Sumerian Lexical Texts from the Temple School of Nippur: This book was one of the first major studies of Sumerian lexicography, the study of Sumerian words and their meanings. Chiera's work helped to lay the foundation for later scholarship in this field.
* They Wrote on Clay: This was a popular book about cuneiform writing, written for a general audience. It helped to introduce the topic to a wider public and remains a valuable resource even today.
* The Temple of Eanna at Uruk: Chiera's contributions to the study of the ancient city of Uruk (modern Warka in Iraq) are also significant. He worked on the excavation of the Eanna temple complex, one of the most important religious sites in ancient Mesopotamia.
Beyond these works, Chiera also published numerous articles and papers on Sumerian language, cuneiform script, and Mesopotamian history. He made significant contributions to the field of Assyriology and helped to advance our understanding of ancient Mesopotamia.