| The
World Fact Book |
Central Intelligence Agency (2002) |
| Factbook
on Intelligence |
Central Intelligence Agency (1997) |
| Spies of the Revolution |
John Edwin and Katherine Bakeless
Lippincott (1962) 192 pgs. |
| How to Write
and Decode Secret Messages |
Marvin Miller, Jim Frazier (illustrator)
Scholastic (1998) |
| Spies |
Tim Healey
London, MacDonald Educational (1978) 61 pgs. |
Buttons for General Washington
(Carolrhoda on My Own Book) |
Connie Roop, Peter E. Hanson (illustrator),
Peter Geiger Roop
Carolhoda Books (1986) 56 pgs. |
DK Readers: Spies!
(Level 3: Reading alone) |
Richard Platt
DK Publications (2000) 48pgs. |
| Spy in the Sky |
Kathleen Karr, Thomas Yezerski (illustrator)
Hyperion (1997) 64 pgs. |
| Wanted Dead or Alive: The True Story
of Harriet Tubman |
Ann McGovern, Richard M. Powers (illustrator)
Econo-Clad Books (1991) |
