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Halley Harper, Science Girl Extraordinaire

Authors: Tracy Borgmeyer
The Halley Harper, Science Girl Extraordinaire book series by Tracy Borgmeyer includes books Summer Set in Motion, Halley Harper, Science Girl Extraordinaire: The Friendship Experiment, Secret Rock Aftershock, and several more. See the complete Halley Harper, Science Girl Extraordinaire series book list in order, box sets or omnibus editions, and companion titles.
5 Books
#1
Summer Set in Motion - Book #1 of the Halley Harper, Science Girl Extraordinaire

Summer Set in Motion

Tracy Borgmeyer
From $5.19
#2
#3
Secret Rock Aftershock - Book #3 of the Halley Harper, Science Girl Extraordinaire

Secret Rock Aftershock

Tracy Borgmeyer
From $5.19
#4
Nature Code Breakers - Book #4 of the Halley Harper, Science Girl Extraordinaire

Nature Code Breakers

Tracy Borgmeyer
From $12.46
#5
Race to Outer Space - Book #5 of the Halley Harper, Science Girl Extraordinaire

Race to Outer Space

Tracy Borgmeyer
From $16.85
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