As I continue to read about early Jewish and Christian Pneumatologies my interests have peaked in Greco-Roman Pneumatologies. Does anyone know if there is a standard work on this subject that I can consult? I haven’t run across one yet, but I’d be very interested in knowing if it exists!

(FWIW: In The Spirit in First-Century Judaism John R. Levison mentions Hans Leisegang’s Der Heilige Geist for a text that examines Greek and Roman Pneumatologies in relation to Jewish, but I’m wondering if there is something more specific, limited to Greco-Roman thought.)