Tough Trails Author:Irene Morck A Hi-Lo book. (High interest, lower reading level) especially for struggling readers 12 and up. — Sample copy, from the back cover — The horses' iron shoes scraped, metal against solid stone. Slowly they struggled upward legs bent, lungs wheezing. Society Girl's halter rope tightened in my hand. I looked back. The old mare was really having proble... more »ms. Groaning, she put her head down and lurched over one of the big rocks, her shoes slipping. Then as they in slow motion, she crumpled to the ground.« less