Excavation projects were financed by grants from the National Science Foundation, the National Geographic Society, the Wenner Gren Foundation and the University of Kansas General Research Fund.

Le Malpas excavations were done thanks to Paul Fitte who provided contacts with the landowners and François Bordes, Director of Antiquities for the Aquitaine region at the time.

Fieldwork at Kadar, Luscic and Zobiste in northern Bosnia was organized with the collaboration with Djuro Basler, curator at the State Museum of Bosnia-Herzegovina in Sarajevo.

Friedrich Brandtner was the representative of the Austrian Antiquity Service for the Grubgraben project.

At Solutré, we worked with Jean Combier who directed excavations at the site between 1968 and 1986.