Oliver Dunn received the PH.D. degree from Cornell University. He is Professor Emeritus in Purdue University and a longtime student of Spanish and early history of Spanish America.James E. Kelley, Jr., received the M.A. degree from American University. A mathematician and computer and management consultant by vocation, for the past twenty years he has studied the history of European cartography and navigation in late-medieval times. Both are members of the Society for the History of Discoveries and have written extensively on the history of navigation and on Columbus's first voyage, Although they remain unconvinced of its conclusions, both were consultants to the National geographic Society's 1986 effort to establish Samana Cay as the site of Columbus's first landing.

Oliver Dunn received the PH.D. degree from Cornell University. He is Professor Emeritus in Purdue University and a longtime student of Spanish and early history of Spanish America.James E. Kelley, Jr., received the M.A. degree from American University. A mathematician and computer and management consultant by vocation, for the past twenty years he has studied the history of European cartography and navigation in late-medieval times. Both are members of the Society for the History of Discoveries and have written extensively on the history of navigation and on Columbus's first voyage, Although they remain unconvinced of its conclusions, both were consultants to the National geographic Society's 1986 effort to establish Samana Cay as the site of Columbus's first landing.

Oliver Dunn received the PH.D. degree from Cornell University. He is Professor Emeritus in Purdue University and a longtime student of Spanish and early history of Spanish America.James E. Kelley, Jr., received the M.A. degree from American University. A mathematician and computer and management consultant by vocation, for the past twenty years he has studied the history of European cartography and navigation in late-medieval times. Both are members of the Society for the History of Discoveries and have written extensively on the history of navigation and on Columbus's first voyage, Although they remain unconvinced of its conclusions, both were consultants to the National geographic Society's 1986 effort to establish Samana Cay as the site of Columbus's first landing.