Tureng Tepe is a major site in the archaeology of Iran, but despite having been excavated by two different foreign archaeological missions, crucial periods in its history remain underreported. This is especially the case for the Chalcolithic and Bronze Age layers at the site, which have not been comprehensively published in English. The present investigation focuses on the Frederick and Susanne Wulsin excavation archive and collection at the University of Pennsylvania Museum of Archaeology and Anthropology and shows that despite a rudimentary approach to excavation, the Wulsins' excavation records contain valuable information on the material culture and chronology of the site. Indeed, when viewed in combination with the published information available from the later French excavations directed by Jean Deshayes, the Wulsin excavations help place Tureng Tepe in its local and regional context. This article presents the results of the primary excavations conducted by the Wulsins in 1931, anchoring their Mound C sequence in a relative and absolute chronological framework using parallels to the Deshayes materials, and assesses the utility of the Wulsin collection for future research.