Dinosaurs

(2000)

Knights and Castles: A Companion to the Knight At Dawn

(2000)

Mummies and Pyramids: A Nonfiction Companion to Mummies in the Morning

(2001)

Pirates

(2001)

Rain Forests: A Nonfiction Companion to Afternoon On the Amazon

(2001)

Space

(2002)

Titanic

(2002)

Twisters and Other Terrible Storms

(2003)

Dolphins and Sharks: A Nonfiction Companion to Dolphins At Daybreak

(2003)

Ancient Greece and the Olympics

(2004)

American Revolution: A Companion to the Revolutionary War On Wednesday

(2004)

Sabertooths and the Ice Age

(2005)

Pilgrims: A Nonfiction Companion To Thanksgiving On Thursday

(2005)

Ancient Rome and Pompeii

(2006)

Tsunamis and Other Natural Disasters: A Nonfiction Companion to Hide Tide in Hawaii

(2007)

Polar Bears and the Arctic

(2007)

Sea Monsters: A nonfiction companion to Dark Day in the Deep Sea

(2008)

Penguins and Antarctica

(2008)

Leonardo da Vinci

(2009)

Ghosts

(2009)

Leprechauns and Irish Folklore

(2010)

Rags and Riches: Kids in the Time of Charles Dickens

(2010)

Snakes and Other Reptiles: A Nonfiction Companion to A Crazy Day with Cobras

(2011)

Dog Heroes: A Nonfiction Companion to Dogs in the Dead of Night

(2011)

Abraham Lincoln: A Nonfiction Companion to Abe Lincoln at Last!

(2011)

Pandas and Other Endangered Species: A Nonfiction Companion to A Perfect Time for Pandas

(2012)

Horse Heroes: A Nonfiction Companion to Stallion by Starlight

(2013)