Tamara Hartson

Mammals of the Rocky Mountains

Chris Fisher, Don Pattie, et al.

Castles and Knights

Tamara Hartson

Squirrels of the West

Tamara Hartson, Gary Ross, et al.

Animal Tracks of Texas

Ian Sheldon, Tamara Hartson, et al.

Animal Tracks of New England

Ian Sheldon, Tamara Hartson, et al.

Animal Tracks of Alaska

Ian Sheldon, Tamara Hartson, et al.

Weird Ocean Creatures

Tamara Hartson

Planets

Tamara Hartson

Spiders

Tamara Hartson

Robots

Tamara Hartson

Night Skies of Canada

Tamara Hartson

Astronauts & Space

Tamara Hartson

Space

Tamara Hartson

Alberta Animal Tracks

Tamara Hartson y Ian Sheldon

British Columbia Animal Tracks

Tamara Hartson, Ian Sheldon, et al.

Manitoba Animal Tracks

Ian Sheldon y Tamara Hartson

Saskatchewan Animal Tracks

Ian Sheldon y Tamara Hartson

Atlantic Canada Animal Tracks

Tamara Hartson, Ian Sheldon, et al.

Exploring Space

Tamara Hartson