"This is an important book that breaks through the well-maintained silence surrounding the historic connections between anthropology and espionage and should be read by a wide audience."—Archaeology
"This volume combines superior scholarship with a gripping study. . . .The Archaeologist Was a Spy is a real-life thriller set in a fascinating locale and time."—American Archaeology
"As a result of careful, painstaking research, Harris and Sadler have uncovered and written a fascinating story. This is the account of the secret side of the life of the well-known archaeologist, Sylvanus G. Morley, an expert on the Maya and American spy during World War I."—enchantment
"The Archaeologist was a Spy gives long overdue recognition to some able agents and expands the public record on ONI World War I operations. It is well documented with copies of Morley's reports and primary source citations. . . [This] book is a valuable contribution to the intelligence literature."—Studies in Intelligence
"In this engagingly written, informative book, Mr. Harris and Mr. Sadler set the archaeologists' mission within broader perspective of Washington's Latin American strategy, describe their adventures throughout the region, and help fill an important gap in the history of U.S. intelligence."—Cloak-and-Dagger Book Reviews
"This book is brilliantly written and could well set the standard whereby all such partial biographies should be judged. For those interested in Maya archaeology and history, real-life spy thrillers, or the lives of the great American scientists, it is hard to beat."—Roundup Magazine
"Readers of this handsomely designed book will be rewarded with a fascinating look at the wartime travails of a man who was at once both a dedicated spy for the U. S. Navy and a renowned archaeologist."—Journal of Military History
"This fascinating book, which is quite difficult to put down once opened, chronicles and assesses not only Morley's contributions to archaeology and intelligence, but also the organization, methods, and ventures of ONI clandestine operations in World War I. It makes a significant contribution to the study of American intelligence operations."—Military Heritage
"It's an utterly fascinating historical account which has only recently become known. History enthusiasts won't want to miss it!"—WTBF- AM/FM Book Bit
"This is a very readable, entertaining, and interesting book. . . . The first book on a topic that has too long been ignored, this study raises important questions for further research."—The Americas
"Scholars will benefit from this book for decades to come."—American Historical Review
"This book is the product of extensive, groundbreaking research, masterful collation and expertise, truly 'suberb scholarship' as one reviewer put it. . . . The Archaeologist was a Spy is a rare example of an excellent read that brings to light an untold tale of selfless heroes and a great reference book that fills a gaping hole in a piecemeal historiography."—The Submarine Review