When one of its agents disappears while investigating rumors about the location of Noah's Ark, a U.S. government agency called "the firm" sends Vietnam veteran Jeff Rivers to look for missing archaeologist Bruce Hansman and for Hansman's daughter Eve
Used availability for David Daniel's Ark
Hardback Editions
January 1985 : USA Hardback
Paperback Editions
August 1986 : USA Mass Market Paperback