31.
 |  | Title: Guide to America's Outdoors : Middle-Atlantic by Ann Jones, Skip Brown, National Geographic Society (U.S.), National Geographic Society ISBN: 0792277481 Publisher: National Geographic Pub. Date: April, 2001 List Price: $24.00 Amazon.com Price: $24.00 |
32.
 |  | Title: The First Ladies by Margaret B. Klapthor, Allida M. Black, White House Historical Association, National Geographic Society (U.S.) ISBN: 0912308710 Publisher: White House Historical Assn Pub. Date: June, 1999 List Price: $25.00 Amazon.com Price: $25.00 |
33.
 |  | Title: The Earth Pack: A Three-Dimensional Action Book by Ron Van Der Meer, Ron Fisher, National Geographic Society (U.S.) Book Division, National Geographic Society ISBN: 0792229576 Publisher: National Geographic Pub. Date: October, 1995 List Price: $40.00 Amazon.com Price: $40.00 |
34.
 |  | Title: Small Inventions That Make a Big Difference (Books for World Explorers Series 5 No. 2) by Joseph H. Bailey, Donald J. Crump, John Huehnergarth, National Geographic Society (U.S.) ISBN: 0870444980 Publisher: National Geographic Pub. Date: January, 1984 List Price: $8.95 Amazon.com Price: $8.95 |
35.
 |  | Title: Florida and the Southeast (National Geographic's Driving Guides to America) by Raymond Gehman, National Geographic Society (U.S.) Book Division, John M. Thompson ISBN: 0792234308 Publisher: National Geographic Pub. Date: June, 1997 List Price: $14.95 Amazon.com Price: $14.95 |
36.
 |  | Title: National Geographic's Driving Guide to the Far West by Jerry Camarillo Dunn, Phil Schermeister, National Geographic Society (U.S.) Book Division ISBN: 0792234278 Publisher: National Geographic Pub. Date: June, 1996
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37.
 |  | Title: African Animal Giants: A National Geographic Action Book (A National Geographic Action Book) by Robert Cremins, James M. Dietz, National Geographic Society (U.S.) Book Division ISBN: 0792227832 Publisher: National Geographic Pub. Date: May, 1997 List Price: $16.00 Amazon.com Price: $16.00 |
38.
 |  | Title: The Company We Keep: America's Endangered Species by Douglas H. Chadwick, Joel Sartore, National Geographic Society (U.S.), National Geographic Society ISBN: 0792233107 Publisher: National Geographic Pub. Date: November, 1996 List Price: $27.50 Amazon.com Price: $27.50 |
39.
 |  | Title: Touring America Seventy-Five Years Ago: How the Automobile and the Railroad Changed the Nation: Chronicles from National Geographic (Cultural & Geographical Exploration Series/Chronicles from National geograpHic) by Arthur Meier Schlesinger, Fred L. Israel, National Geographic Society (U.S.), National Geographic Society, Fred L. Asrael ISBN: 079105098X Publisher: Chelsea House Pub (Library) Pub. Date: March, 1999 List Price: $21.95 Amazon.com Price: $21.95 |
40.
 |  | Title: The Ancient Incas: Chronicles from National Geographic (Cultural and Geographical Exploration.) by Arthur Meier Schlesinger, Fred L. Israel, Hiram Bingham, National Geographic Society (U.S.), National Geographic Society ISBN: 0791051048 Publisher: Chelsea House Pub (Library) Pub. Date: March, 1999 List Price: $22.95 Amazon.com Price: $22.95 |