Will Osborne

Mummies and Pyramids (Magic Tree House Research Guide)

2013

Pirates

2001

Titanic

2012

Dinosaurs

2003

Sabertooths and the Ice Age

2019

Rain forests

2011

Twisters and Other Terrible Storms

2003

Space (Magic Tree House Rsrch Gdes(R))

2009

Knights and Castles

2011

Dolphins and Sharks

2013

Hitler's Secret

2013

Smoke and Mirrors

1993

Das magische Baumhaus mit Forscherhandbuch

2005

13 Ghosts

1988

Sleeping Bobby

2005

Rainforests (Magic Tree House Rsrch Gdes(R))

2001

Joe Magarac (Library of American Folktales Kipling)

1993

Jason and the Argonauts

1988