Spider Robinson | Bookhype

Callahan

Cover of Callahan's Key

Book #2000: Callahan's Key

Cover of Callahan's Con

Book #2003: Callahan's Con

Callahan's Crosstime Saloon

Cover of Time Travellers Strictly Cash

Book #2: Time Travellers Strictly Cash

Cover of Callahan's Secret

Book #3: Callahan's Secret

European School of Oncology Monographs

Five Star Speculative Fiction

Orbit Books

Radcliffe Biography