Thomas B. Allen is the author or co-author of numerous books about military history and espionage. His children's books for National Geographic -- Remember Pearl Harbor, Remember Valley Forge, George Washington, Spymaster, and Harriet Tubman, Secret Agent, have received outstanding reviews and won multiple awards. He lives in Bethesda, Maryland. Visit him on the web at www.tballen.com
Roger MacBride Allen is the award-winning author of 22 science fiction novels, three of them New York Times bestsellers. He is Thomas B. Allen's son. Mr. Lincoln's High-Tech War is his first book for the National Geographic, the first he has co-authored with his father, and his first non-fiction book for children. He lives in Takoma Park, Maryland with his wife and two young sons. Visit his website at www.rogermacbrideallen.com