Rescued : 21 stories of daring rescues- with exercises for developing reading comprehension and critical thinking skills / Henry Billings and Melissa Billings.

Monsters : 21 stories of the most fantastic and gruesome creatures of all time- with excersises for developing reading comprehension and critical thinking skills / Henry Billings and Melissa Billings, Dan Dramer.

Apparitions : 21 stories of ghosts, spirits and mysterious manifestations- with excercises for developing reading comprehension and critical thinking skills / Henry Billings, Melissa Billings, John F. Warner, Margaret B. Warner.

Heroes : 21 true stories of courage and honor - with exercises for developing critical reading skills.

Disasters : 21 true stories of death and destruction, with exercises for developing readling comprehension and critical thinking skills

Heroes : 21 true stories of courage and honor--with exercises for developing readling comprehension and critical thinking skills

Deceptions : 21 fascinating stories of trickery and fraud - with exercises for developing critical reading skills