The League of Nations, International Terrorism, and British Foreign Policy, 1934–1938Michael D. Callahan · First published 2018Open the Tome
UFOs, Chemtrails, and AliensDonald R. Prothero, Timothy D. Callahan, Michael Shermer · First published 2017Open the Tome
Termination of construction and design contractsMichael T. Callahan · First published 2009Open the Tome
Procurement of Construction and Design Contracts (Construction Law Library)Michael T. Callahan · First published 2005Open the Tome
